diff --git a/.gitignore b/.gitignore
index 02effa0..ab3508f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 # Generated files
 *.log
 node_modules/
+.yarn/
diff --git a/package.json b/package.json
index ce3dbee..bacd35d 100644
--- a/package.json
+++ b/package.json
@@ -5,8 +5,8 @@
   "main": "src/cli.js",
   "scripts": {
     "test": "jest",
-    "check-format": "prettier --check {src,test}/**/*.js README.md",
-    "format": "prettier --write {src,test}/**/*.js README.md"
+    "check-format": "prettier --check \"{src,test}/**/*.js\" README.md",
+    "format": "prettier --write \"{src,test}/**/*.js\" README.md"
   },
   "bin": {
     "diglett": "./bin/diglett"
@@ -40,6 +40,7 @@
     "@yarnpkg/lockfile": "^1.1.0",
     "chalk": "^3.0.0",
     "glob": "^7.1.6",
+    "js-yaml": "^4.1.0",
     "yargs": "^15.1.0"
   },
   "devDependencies": {
diff --git a/src/commands/yarn-workspace.js b/src/commands/yarn-workspace.js
index 31e8d18..8579791 100644
--- a/src/commands/yarn-workspace.js
+++ b/src/commands/yarn-workspace.js
@@ -1,4 +1,3 @@
-const fs = require('fs');
 const path = require('path');
 const glob = require('glob');
 const sharedArguments = require('../sharedArguments');
diff --git a/src/errors.js b/src/errors.js
index b5b9aff..815202a 100644
--- a/src/errors.js
+++ b/src/errors.js
@@ -1,5 +1,3 @@
-const path = require('path');
-
 class DiglettError extends Error {
   constructor(message, errorType) {
     super(message);
diff --git a/src/fs.js b/src/fs.js
index 67b0ef4..2ad0bcd 100644
--- a/src/fs.js
+++ b/src/fs.js
@@ -1,6 +1,7 @@
 const fs = require('fs');
 const path = require('path');
 const lockfile = require('@yarnpkg/lockfile');
+const yml = require('js-yaml');
 const { FileNotFoundError, ParseError } = require('./errors');
 
 function readFile(fileName, projectPath) {
@@ -22,11 +23,21 @@ function readJSON(fileName, projectPath) {
 
 function readYarnLockfile(projectPath) {
   const file = readFile('yarn.lock', projectPath);
-  const parsed = lockfile.parse(file);
-  if (parsed.type !== 'success') {
-    throw new ParseError('Failed to parse yarn.lock');
+
+  try {
+    const parsed = lockfile.parse(file);
+    if (parsed.type !== 'success') {
+      throw new ParseError('Failed to parse yarn.lock');
+    }
+    return parsed.object;
+  } catch {
+    try {
+      const parsed = yml.load(file);
+      return parsed;
+    } catch (error) {
+      throw new ParseError('Failed to parse yarn.lock');
+    }
   }
-  return parsed.object;
 }
 
 function readPackageJSON(projectPath) {
diff --git a/src/getDuplicateDependencies.js b/src/getDuplicateDependencies.js
index 309ca3d..fb323bf 100644
--- a/src/getDuplicateDependencies.js
+++ b/src/getDuplicateDependencies.js
@@ -1,5 +1,3 @@
-const groupYarnDependencies = require('./groupYarnDependencies');
-
 function getDuplicateDependencies(groupedVersions, packageNamePattern) {
   const duplicates = new Map();
   groupedVersions.forEach((versions, packageName) => {
diff --git a/src/groupYarnDependencies.js b/src/groupYarnDependencies.js
index a6b08fb..452f11b 100644
--- a/src/groupYarnDependencies.js
+++ b/src/groupYarnDependencies.js
@@ -1,4 +1,24 @@
 const { StaleLockfileError } = require('./errors');
+const parseYarnDescriptor = require('./parseYarnDescriptor');
+
+function resolveDependency(packageName, requestedVersion, dependencies) {
+  // yarn v1 uses a simple format for the key: `${packageName}@${version}`
+  const simpleKey = `${packageName}@${requestedVersion}`;
+  if (simpleKey in dependencies) return dependencies[simpleKey];
+
+  for (const [key, value] of Object.entries(dependencies)) {
+    // ignore metadata keys
+    if (key === '__metadata') continue;
+
+    // yarn v2 uses a more complex format for the key: `${packageName}@${protocol}${version}`
+    const { packageName: name, version } = parseYarnDescriptor(key);
+    if (name === packageName && version === requestedVersion) {
+      return value;
+    }
+  }
+
+  return null;
+}
 
 function groupYarnDependencies(
   packageDependencies,
@@ -16,18 +36,22 @@ function groupYarnDependencies(
     }
 
     const versions = installedVersions.get(packageName);
-    const dependencyKey = `${packageName}@${requestedVersion}`;
-    const resolvedDependency = dependencies[dependencyKey];
+    const resolvedDependency = resolveDependency(
+      packageName,
+      requestedVersion,
+      dependencies
+    );
+
     if (!resolvedDependency) {
       throw new StaleLockfileError(
-        `Unable to find resolution for "${dependencyKey}", ensure yarn.lock is up to date`
+        `Unable to find resolution for package "${packageName}" and version "${requestedVersion}", ensure yarn.lock is up to date`
       );
     }
     const installedVersion = resolvedDependency.version;
 
     if (!versions.has(installedVersion)) {
       versions.add(installedVersion);
-      const subDependencies = dependencies[dependencyKey].dependencies;
+      const subDependencies = resolvedDependency.dependencies;
       for (const subDependency in subDependencies) {
         populateVersions(
           subDependency,
diff --git a/src/parseYarnDescriptor.js b/src/parseYarnDescriptor.js
new file mode 100644
index 0000000..113ea23
--- /dev/null
+++ b/src/parseYarnDescriptor.js
@@ -0,0 +1,41 @@
+/**
+ * A regular expression for parsing a yarn berry descriptor.
+ */
+const PARSE_REGEX = /(^@?[^/]+?\/?[^@/]+?)@(?:.*:)*(.+)/;
+
+/**
+ * @typedef {Object} ParsedDescriptor
+ * @property {string} packageName
+ * @property {string} version
+ */
+
+/**
+ * Parses a yarn berry descriptor into an object.
+ *
+ * For example `@material/ripple@npm:1.0.0` will be parsed to:
+ * ```
+ * {
+ *  package: '@material/ripple',
+ *  version: '1.0.0',
+ * }
+ * ```
+ *
+ * Supported formats:
+ * - `package@version`
+ * - `@scope/package@version`
+ * - `package@protocol:version`
+ * - `@scope/package@protocol:version`
+ *
+ * @param {string} descriptor - The yarn berry descriptor to parse.
+ * @returns {ParsedDescriptor} The parsed descriptor.
+ */
+function parseYarnDescriptor(descriptor) {
+  const result = PARSE_REGEX.exec(descriptor);
+  if (!result) {
+    throw new Error(`Unable to parse descriptor: ${descriptor}`);
+  }
+  const [, packageName, version] = result;
+  return { packageName, version };
+}
+
+module.exports = parseYarnDescriptor;
diff --git a/test/fixtures/yarn-berry/.yarnrc.yml b/test/fixtures/yarn-berry/.yarnrc.yml
new file mode 100644
index 0000000..3186f3f
--- /dev/null
+++ b/test/fixtures/yarn-berry/.yarnrc.yml
@@ -0,0 +1 @@
+nodeLinker: node-modules
diff --git a/test/fixtures/yarn-berry/package-lock.json b/test/fixtures/yarn-berry/package-lock.json
new file mode 100644
index 0000000..8ae64ac
--- /dev/null
+++ b/test/fixtures/yarn-berry/package-lock.json
@@ -0,0 +1,353 @@
+{
+  "name": "diglett-yarn-berry",
+  "requires": true,
+  "lockfileVersion": 1,
+  "dependencies": {
+    "@material/animation": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/animation/-/animation-3.1.0.tgz",
+      "integrity": "sha512-ZfP95awrPBLhpaCTPNx+xKYPp2D88fzf5p5YNVp6diUAGRpq3g12Aq7qJfIHDXAFo5CtrYhgOKRqIKxUVcFisQ==",
+      "requires": {
+        "tslib": "^1.9.3"
+      }
+    },
+    "@material/base": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/base/-/base-3.1.0.tgz",
+      "integrity": "sha512-pWEBHyPrMV3rdnjqWWH96h5t3MxQI6V1J9jOor+UBG7bXQtr6InTabTqhz5CLY7r+qZU8YvNh2OKIy8heP0cyQ==",
+      "requires": {
+        "tslib": "^1.9.3"
+      }
+    },
+    "@material/button": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@material/button/-/button-3.2.0.tgz",
+      "integrity": "sha512-VEASy3Dtc7BCo8/cuUIp6w0+/l4U1myGZffK5GeFVInP/erStSQOmYXT7jGXkZpUglRzWOpVvEpc6nsvhMqGbw==",
+      "requires": {
+        "@material/elevation": "^3.1.0",
+        "@material/feature-targeting": "^3.1.0",
+        "@material/ripple": "^3.2.0",
+        "@material/rtl": "^3.2.0",
+        "@material/shape": "^3.1.0",
+        "@material/theme": "^3.1.0",
+        "@material/typography": "^3.1.0"
+      }
+    },
+    "@material/density": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@material/density/-/density-4.0.0.tgz",
+      "integrity": "sha512-PuOCPCXlWjimTq+OuCS8biAb1JE9aXCZwT1dRG9REAIAK7bN8KeeTzkeJp6jTj+ggZjWphwKF0lKeX6Gv+e/lw=="
+    },
+    "@material/dom": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/dom/-/dom-3.1.0.tgz",
+      "integrity": "sha512-RtBLSkrBjMfHwknaGBifAIC8cBWF9pXjz2IYqfI2braB6SfQI4vhdJviwyiA5BmA/psn3cKpBUZbHI0ym0O0SQ==",
+      "requires": {
+        "tslib": "^1.9.3"
+      }
+    },
+    "@material/elevation": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/elevation/-/elevation-3.1.0.tgz",
+      "integrity": "sha512-e45LqiG6LfbR1M52YkSLA7pQPeYJOuOVzLp27xy2072TnLuJexMxhEaG4O1novEIjsTtMjqfrfJ/koODU5vEew==",
+      "requires": {
+        "@material/animation": "^3.1.0",
+        "@material/feature-targeting": "^3.1.0",
+        "@material/theme": "^3.1.0"
+      }
+    },
+    "@material/feature-targeting": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/feature-targeting/-/feature-targeting-3.1.0.tgz",
+      "integrity": "sha512-aXAa1Pv6w32URacE9LfMsl9zI6hFwx1K0Lp3Xpyf4rAkmaAB6z0gOkhicOrVFc0f64YheJgHjE7hJFieVenQdw=="
+    },
+    "@material/floating-label": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@material/floating-label/-/floating-label-4.0.0.tgz",
+      "integrity": "sha512-ovuZKhH7U+YmZk8kXftYCdEaU9InJdkBsPe4TP+dg4HiO1lWmd7ZxVsMo6iTl4yaFofkBPj3VDkbE1fLnHxKPA==",
+      "requires": {
+        "@material/animation": "^4.0.0",
+        "@material/base": "^4.0.0",
+        "@material/rtl": "^4.0.0",
+        "@material/theme": "^4.0.0",
+        "@material/typography": "^4.0.0",
+        "tslib": "^1.9.3"
+      },
+      "dependencies": {
+        "@material/animation": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/animation/-/animation-4.0.0.tgz",
+          "integrity": "sha512-IfzXzstWdtKQcsNWu+s2Hpz5dBwkTHtgtzoesr+FC7TqENH+SJdsF1ntnZI1XVi2C9ZlBf7f4BSmXpWHD0MIlw==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/base": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/base/-/base-4.0.0.tgz",
+          "integrity": "sha512-vHm7fkqXzjdfxifXvlmaZColoIfKuWmO+1rvdzDORTWP+A8Dq70cgKd2I1SBqxzDGjOasMzHbQI6f9MISQf2vQ==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/feature-targeting": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/feature-targeting/-/feature-targeting-4.0.0.tgz",
+          "integrity": "sha512-0gk+f151vqmEdWkrQ9ocPlQRU9aUtSGsVBhletqIbsthLUsZIz9qk25FHjV1wHd/bGHknd9NH+T8ENprv3KLFg=="
+        },
+        "@material/rtl": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/rtl/-/rtl-4.0.0.tgz",
+          "integrity": "sha512-AP8zByVDEWAJVJoxByVccUbH+BX24IeG7ol+L6Qd8JjzPpz1fzPVJ4BeDNaF0a6sXtHsRmj2zN5dsx/BGC3IHg=="
+        },
+        "@material/theme": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/theme/-/theme-4.0.0.tgz",
+          "integrity": "sha512-vS4G4rusJTatTH50kSYO1U3UGN8EY9kGRvPaFsEFKikJBOqcR6KWK9H9/wCLqqd6nDNifEj9H2sdWw1AV4NA6Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        },
+        "@material/typography": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/typography/-/typography-4.0.0.tgz",
+          "integrity": "sha512-lUG4yjG9fl1ryNX4OVnOmi+EjhiV4WsWcYt4yzffHrFg1RfKuCAV59j7TtmlMfZIkNDwqK5jvk3oOpTRDFpL8Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        }
+      }
+    },
+    "@material/line-ripple": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@material/line-ripple/-/line-ripple-4.0.0.tgz",
+      "integrity": "sha512-+vrgKlb2gUBIKxlzVKLn/tX76qJ0Z19RkH2i7mh4IdH8KxeEai8NQQYWqeOOKtyp8JbH0ObGyqJCwPo2VbHDmw==",
+      "requires": {
+        "@material/animation": "^4.0.0",
+        "@material/base": "^4.0.0",
+        "@material/theme": "^4.0.0",
+        "tslib": "^1.9.3"
+      },
+      "dependencies": {
+        "@material/animation": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/animation/-/animation-4.0.0.tgz",
+          "integrity": "sha512-IfzXzstWdtKQcsNWu+s2Hpz5dBwkTHtgtzoesr+FC7TqENH+SJdsF1ntnZI1XVi2C9ZlBf7f4BSmXpWHD0MIlw==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/base": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/base/-/base-4.0.0.tgz",
+          "integrity": "sha512-vHm7fkqXzjdfxifXvlmaZColoIfKuWmO+1rvdzDORTWP+A8Dq70cgKd2I1SBqxzDGjOasMzHbQI6f9MISQf2vQ==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/feature-targeting": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/feature-targeting/-/feature-targeting-4.0.0.tgz",
+          "integrity": "sha512-0gk+f151vqmEdWkrQ9ocPlQRU9aUtSGsVBhletqIbsthLUsZIz9qk25FHjV1wHd/bGHknd9NH+T8ENprv3KLFg=="
+        },
+        "@material/theme": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/theme/-/theme-4.0.0.tgz",
+          "integrity": "sha512-vS4G4rusJTatTH50kSYO1U3UGN8EY9kGRvPaFsEFKikJBOqcR6KWK9H9/wCLqqd6nDNifEj9H2sdWw1AV4NA6Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        }
+      }
+    },
+    "@material/notched-outline": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@material/notched-outline/-/notched-outline-4.0.0.tgz",
+      "integrity": "sha512-9WNG7dZS83nu72kmoknA3XyvZQIxx8QBjEB2Q2KGyRp4Q8zrzWxfcvTYgiOsYgvz013JnTqaqe4g0wjl6v789g==",
+      "requires": {
+        "@material/base": "^4.0.0",
+        "@material/floating-label": "^4.0.0",
+        "@material/rtl": "^4.0.0",
+        "@material/shape": "^4.0.0",
+        "@material/theme": "^4.0.0",
+        "tslib": "^1.9.3"
+      },
+      "dependencies": {
+        "@material/base": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/base/-/base-4.0.0.tgz",
+          "integrity": "sha512-vHm7fkqXzjdfxifXvlmaZColoIfKuWmO+1rvdzDORTWP+A8Dq70cgKd2I1SBqxzDGjOasMzHbQI6f9MISQf2vQ==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/feature-targeting": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/feature-targeting/-/feature-targeting-4.0.0.tgz",
+          "integrity": "sha512-0gk+f151vqmEdWkrQ9ocPlQRU9aUtSGsVBhletqIbsthLUsZIz9qk25FHjV1wHd/bGHknd9NH+T8ENprv3KLFg=="
+        },
+        "@material/rtl": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/rtl/-/rtl-4.0.0.tgz",
+          "integrity": "sha512-AP8zByVDEWAJVJoxByVccUbH+BX24IeG7ol+L6Qd8JjzPpz1fzPVJ4BeDNaF0a6sXtHsRmj2zN5dsx/BGC3IHg=="
+        },
+        "@material/shape": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/shape/-/shape-4.0.0.tgz",
+          "integrity": "sha512-wmr05YBrEL462QPiJ+t9xh5RqxzylXYo/8DVZnb/1WA9GZ6m38UK/8Awtip1cZAN34pzD/9p5AydyywlQVoI+g==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        },
+        "@material/theme": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/theme/-/theme-4.0.0.tgz",
+          "integrity": "sha512-vS4G4rusJTatTH50kSYO1U3UGN8EY9kGRvPaFsEFKikJBOqcR6KWK9H9/wCLqqd6nDNifEj9H2sdWw1AV4NA6Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        }
+      }
+    },
+    "@material/ripple": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@material/ripple/-/ripple-3.2.0.tgz",
+      "integrity": "sha512-GtwkfNakALmfGLs6TpdFIVeAWjRqbyT7WfEw9aU7elUokABfHES+O0KoSKQSMQiSQ8Vjl90MONzNsN1Evi/1YQ==",
+      "requires": {
+        "@material/animation": "^3.1.0",
+        "@material/base": "^3.1.0",
+        "@material/dom": "^3.1.0",
+        "@material/feature-targeting": "^3.1.0",
+        "@material/theme": "^3.1.0",
+        "tslib": "^1.9.3"
+      }
+    },
+    "@material/rtl": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/@material/rtl/-/rtl-3.2.0.tgz",
+      "integrity": "sha512-L/w9m9Yx1ceOw/VjEfeJoqD4rW9QP3IBb9MamXAg3qUi/zsztoXD/FUw179pxkLn4huFFNlVYZ4Y1y6BpM0PMA=="
+    },
+    "@material/shape": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/shape/-/shape-3.1.0.tgz",
+      "integrity": "sha512-Oyvs7YjHfByA0e9IVVp7ojAlPwgSu3Bl0cioiE0OdkidkAaNu0izM2ryRzMBDH5o8+lRD0kpZoT+9CVVCdaYIg==",
+      "requires": {
+        "@material/feature-targeting": "^3.1.0"
+      }
+    },
+    "@material/textfield": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/@material/textfield/-/textfield-4.0.0.tgz",
+      "integrity": "sha512-1Xg+nriTqFB8+5k8sGkR8LBeD3dRgNuhvwyU8XrUeAs5l/HMfn4CWgbEyZTaJ2EEtFPxnKGedAYqCEwXngwGWg==",
+      "requires": {
+        "@material/animation": "^4.0.0",
+        "@material/base": "^4.0.0",
+        "@material/density": "^4.0.0",
+        "@material/dom": "^4.0.0",
+        "@material/floating-label": "^4.0.0",
+        "@material/line-ripple": "^4.0.0",
+        "@material/notched-outline": "^4.0.0",
+        "@material/ripple": "^4.0.0",
+        "@material/rtl": "^4.0.0",
+        "@material/shape": "^4.0.0",
+        "@material/theme": "^4.0.0",
+        "@material/typography": "^4.0.0",
+        "tslib": "^1.9.3"
+      },
+      "dependencies": {
+        "@material/animation": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/animation/-/animation-4.0.0.tgz",
+          "integrity": "sha512-IfzXzstWdtKQcsNWu+s2Hpz5dBwkTHtgtzoesr+FC7TqENH+SJdsF1ntnZI1XVi2C9ZlBf7f4BSmXpWHD0MIlw==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/base": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/base/-/base-4.0.0.tgz",
+          "integrity": "sha512-vHm7fkqXzjdfxifXvlmaZColoIfKuWmO+1rvdzDORTWP+A8Dq70cgKd2I1SBqxzDGjOasMzHbQI6f9MISQf2vQ==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/dom": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/dom/-/dom-4.0.0.tgz",
+          "integrity": "sha512-GRCJT9+PGWqygZwGf1XLTrbmzP35YWG7+T0hpfhoIJO8VDiMTeyfvhJXFuA2wh9pD0noEjte0lmbdBlykrbWZw==",
+          "requires": {
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/feature-targeting": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/feature-targeting/-/feature-targeting-4.0.0.tgz",
+          "integrity": "sha512-0gk+f151vqmEdWkrQ9ocPlQRU9aUtSGsVBhletqIbsthLUsZIz9qk25FHjV1wHd/bGHknd9NH+T8ENprv3KLFg=="
+        },
+        "@material/ripple": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/ripple/-/ripple-4.0.0.tgz",
+          "integrity": "sha512-9BLIOvyCP5sM+fQpLlcJZWyrHguusJq8E5A1pxg0wQwputOyaPBM7recHhYkJmVjzRpTcPgf1PkvkpN6DKGcNg==",
+          "requires": {
+            "@material/animation": "^4.0.0",
+            "@material/base": "^4.0.0",
+            "@material/dom": "^4.0.0",
+            "@material/feature-targeting": "^4.0.0",
+            "@material/theme": "^4.0.0",
+            "tslib": "^1.9.3"
+          }
+        },
+        "@material/rtl": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/rtl/-/rtl-4.0.0.tgz",
+          "integrity": "sha512-AP8zByVDEWAJVJoxByVccUbH+BX24IeG7ol+L6Qd8JjzPpz1fzPVJ4BeDNaF0a6sXtHsRmj2zN5dsx/BGC3IHg=="
+        },
+        "@material/shape": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/shape/-/shape-4.0.0.tgz",
+          "integrity": "sha512-wmr05YBrEL462QPiJ+t9xh5RqxzylXYo/8DVZnb/1WA9GZ6m38UK/8Awtip1cZAN34pzD/9p5AydyywlQVoI+g==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        },
+        "@material/theme": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/theme/-/theme-4.0.0.tgz",
+          "integrity": "sha512-vS4G4rusJTatTH50kSYO1U3UGN8EY9kGRvPaFsEFKikJBOqcR6KWK9H9/wCLqqd6nDNifEj9H2sdWw1AV4NA6Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        },
+        "@material/typography": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/@material/typography/-/typography-4.0.0.tgz",
+          "integrity": "sha512-lUG4yjG9fl1ryNX4OVnOmi+EjhiV4WsWcYt4yzffHrFg1RfKuCAV59j7TtmlMfZIkNDwqK5jvk3oOpTRDFpL8Q==",
+          "requires": {
+            "@material/feature-targeting": "^4.0.0"
+          }
+        }
+      }
+    },
+    "@material/theme": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/theme/-/theme-3.1.0.tgz",
+      "integrity": "sha512-N4JX+akOwg1faAvFvIEhDcwW4cZfUpwEn8lct6Vs3WczjLF6/KdIoLVaYh+eVl1bzfsoIuWvx56j0B1PjXZw9g==",
+      "requires": {
+        "@material/feature-targeting": "^3.1.0"
+      }
+    },
+    "@material/typography": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@material/typography/-/typography-3.1.0.tgz",
+      "integrity": "sha512-aSNBQvVxIH1kORSYdLGuSTivx6oJ1MSOSTUAsUwhXPQLQlvbdFeZaqUp7xgn+EvRsHGRFhWk5YGuiBds9+7zQg==",
+      "requires": {
+        "@material/feature-targeting": "^3.1.0"
+      }
+    },
+    "tslib": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.10.0.tgz",
+      "integrity": "sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ=="
+    }
+  }
+}
diff --git a/test/fixtures/yarn-berry/package.json b/test/fixtures/yarn-berry/package.json
new file mode 100644
index 0000000..b731c67
--- /dev/null
+++ b/test/fixtures/yarn-berry/package.json
@@ -0,0 +1,9 @@
+{
+  "name": "diglett-yarn-berry",
+  "private": true,
+  "dependencies": {
+    "@material/button": "^3.2.0",
+    "@material/textfield": "^4.0.0"
+  },
+  "packageManager": "yarn@3.6.0"
+}
diff --git a/test/fixtures/yarn-berry/yarn.lock b/test/fixtures/yarn-berry/yarn.lock
new file mode 100644
index 0000000..ad17839
--- /dev/null
+++ b/test/fixtures/yarn-berry/yarn.lock
@@ -0,0 +1,280 @@
+# This file is generated by running "yarn install" inside your project.
+# Manual changes might be lost - proceed with caution!
+
+__metadata:
+  version: 6
+  cacheKey: 8
+
+"@material/animation@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/animation@npm:3.1.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: e381cbf7b820f08cc8b1d4266eb175f300c7ac9b51dd77187db09ad4a230ba4b92526781811f667161ae7320a38661a1f1e6b4658bdfa3b241a05b1b4499bc2a
+  languageName: node
+  linkType: hard
+
+"@material/animation@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/animation@npm:4.0.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: 93c91bfdd1256cf3e4be95d437d6952bc1e966e1efa9887c4b24553ba00eb33e13c3a2c097df002e306698c9d9da0679bf2f690f6de28646cfff29aa716dd0b5
+  languageName: node
+  linkType: hard
+
+"@material/base@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/base@npm:3.1.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: b9552ec944b81826fc85f78412b13dbe8a6ab499d805b2203ff054c7fab995e88062b8ccdb856efcffb6e45d269b0268f75da858235c0d7e4eba05dee081e862
+  languageName: node
+  linkType: hard
+
+"@material/base@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/base@npm:4.0.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: 7bf5a37f28684c3f9b0a3027ec14c24f1fdc90cea90d136ba37c09369927da18fbbe228522ac105d9d445d1c2ad697130de7cb300ca0da6ef42a8c86aa6039e9
+  languageName: node
+  linkType: hard
+
+"@material/button@npm:^3.2.0":
+  version: 3.2.0
+  resolution: "@material/button@npm:3.2.0"
+  dependencies:
+    "@material/elevation": ^3.1.0
+    "@material/feature-targeting": ^3.1.0
+    "@material/ripple": ^3.2.0
+    "@material/rtl": ^3.2.0
+    "@material/shape": ^3.1.0
+    "@material/theme": ^3.1.0
+    "@material/typography": ^3.1.0
+  checksum: 118a58b60a642487b616b0913298d8fa748bb298875109d2988c68c7731c94ef88ad3793104db94c6138cb00e3fea32beed608b01bf22057da7b27c8e6d41285
+  languageName: node
+  linkType: hard
+
+"@material/density@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/density@npm:4.0.0"
+  checksum: 0f808ded52dd15bc5a862c515325e179fb09146d2ebf4443bbd6e9de3343d9c43c29a46b55966cc185bdc85799628e1e280d1d3160fb0a8d8569ee93cfc94fb8
+  languageName: node
+  linkType: hard
+
+"@material/dom@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/dom@npm:3.1.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: 4d8058158420c4402deec106e7bb065ef38985d556ec747f19ce7537e8f53340d3640d6b9d1bfaa95c724f7d7657325962fc89bc368187a7d1eb0b41145b3787
+  languageName: node
+  linkType: hard
+
+"@material/dom@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/dom@npm:4.0.0"
+  dependencies:
+    tslib: ^1.9.3
+  checksum: eea98f633f7db14d5769633fb3dcf54ab76ea0da03a06eac116d5f45cd68e03433872bb34af158de38f674916cf90d27c3491755694518b54e81d19367e8f3dc
+  languageName: node
+  linkType: hard
+
+"@material/elevation@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/elevation@npm:3.1.0"
+  dependencies:
+    "@material/animation": ^3.1.0
+    "@material/feature-targeting": ^3.1.0
+    "@material/theme": ^3.1.0
+  checksum: b91763c7f1e2344bc49ae839afe7b5cd7e204b0095b33beb531578ae82b5109c5c671db4c2ff4035f5dbcdcf945b007ee37c40ba762993c973f5f096d154d3b2
+  languageName: node
+  linkType: hard
+
+"@material/feature-targeting@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/feature-targeting@npm:3.1.0"
+  checksum: 2a56b468b889a7152014124197821d901d156a2bc21c4b6bed86fc8a3b4a918188c8e9f842ddf7915e270b768e7eaade77efd09211fc005c89276e4c8a777357
+  languageName: node
+  linkType: hard
+
+"@material/feature-targeting@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/feature-targeting@npm:4.0.0"
+  checksum: 17da66877d009321dc9f8a3fab42cb8c1e90c6929a320bb249c1bdc78bb94853c6123ff5a874f325efcbbd40fb9eb747e95df924cb9948072c1c8f244171b291
+  languageName: node
+  linkType: hard
+
+"@material/floating-label@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/floating-label@npm:4.0.0"
+  dependencies:
+    "@material/animation": ^4.0.0
+    "@material/base": ^4.0.0
+    "@material/rtl": ^4.0.0
+    "@material/theme": ^4.0.0
+    "@material/typography": ^4.0.0
+    tslib: ^1.9.3
+  checksum: e5d0dbe36c16fe9513cf6c76cf60c45ff368dc7fcb783387dc74f2605342cbc0f9941e69bd9acbfda268a9ea0659af9610ef31c805c49106e6e487777069b015
+  languageName: node
+  linkType: hard
+
+"@material/line-ripple@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/line-ripple@npm:4.0.0"
+  dependencies:
+    "@material/animation": ^4.0.0
+    "@material/base": ^4.0.0
+    "@material/theme": ^4.0.0
+    tslib: ^1.9.3
+  checksum: 6c1079df72ce80f879ed66e11e43c322dd451a891fd9745b3c021f532d9c8d1552ae56a3b52a527f78b43e7bed3b0011e7335c3652b85302d2be5d564b170856
+  languageName: node
+  linkType: hard
+
+"@material/notched-outline@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/notched-outline@npm:4.0.0"
+  dependencies:
+    "@material/base": ^4.0.0
+    "@material/floating-label": ^4.0.0
+    "@material/rtl": ^4.0.0
+    "@material/shape": ^4.0.0
+    "@material/theme": ^4.0.0
+    tslib: ^1.9.3
+  checksum: 4e14ec5e6afc18fcb613e132c08e1a39d66a85b305a1198266c7132e4dc055fb68a5f03d3c6d00252159fb21096d0b58667462155662c41001fa09689d8e4092
+  languageName: node
+  linkType: hard
+
+"@material/ripple@npm:^3.2.0":
+  version: 3.2.0
+  resolution: "@material/ripple@npm:3.2.0"
+  dependencies:
+    "@material/animation": ^3.1.0
+    "@material/base": ^3.1.0
+    "@material/dom": ^3.1.0
+    "@material/feature-targeting": ^3.1.0
+    "@material/theme": ^3.1.0
+    tslib: ^1.9.3
+  checksum: 194ca51c4e74f29802c1e85b177f2bdf6f399aafb3cf7a863eed57b13c53c6e821f4948f9d89cb7b61146992c9206c23ff63972416a4fd50bedd6748d17bc1de
+  languageName: node
+  linkType: hard
+
+"@material/ripple@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/ripple@npm:4.0.0"
+  dependencies:
+    "@material/animation": ^4.0.0
+    "@material/base": ^4.0.0
+    "@material/dom": ^4.0.0
+    "@material/feature-targeting": ^4.0.0
+    "@material/theme": ^4.0.0
+    tslib: ^1.9.3
+  checksum: 9fe64349561cd7e88425bf853667f796032d0e03a3177b90cda17524d23d59eb25fca54f58461331fdeeb59204b9ee88d5e141917230ff30502b3b184ff6bd8a
+  languageName: node
+  linkType: hard
+
+"@material/rtl@npm:^3.2.0":
+  version: 3.2.0
+  resolution: "@material/rtl@npm:3.2.0"
+  checksum: 9db6c26454ed323089699fbf150f179ddbb3564dae52292fcd6a12c56bc206b2ebf7a4a19b0e9bb06e0a63574d2c1ba4e597b0937b786c3fd5fd08c34029b845
+  languageName: node
+  linkType: hard
+
+"@material/rtl@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/rtl@npm:4.0.0"
+  checksum: 10b9b00fe74d87f5066269635662fd8af8e2621aebbb4df759ac3bbae469a8b1ba752114436198e40cdf5ed586c1ad19b283d963ca1d0367b3c54aad5cc9b16b
+  languageName: node
+  linkType: hard
+
+"@material/shape@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/shape@npm:3.1.0"
+  dependencies:
+    "@material/feature-targeting": ^3.1.0
+  checksum: c6d7cdc89cef2d0f1abb2896202b86467ff0cc37c1d9f5b0cbcfad74557c6cd2409fcc46b9359e352271dc0e796c4fbfef3e228c74e3a82ce60e8fd2e225a455
+  languageName: node
+  linkType: hard
+
+"@material/shape@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/shape@npm:4.0.0"
+  dependencies:
+    "@material/feature-targeting": ^4.0.0
+  checksum: 31d37eee93e98df3ddb50fbd4fc0c7defc179f3c289ae576e073c1eced7f4934344d52768f691d07f3130c810ee396160caceab021f2520dd4e4a16e8fbeca33
+  languageName: node
+  linkType: hard
+
+"@material/textfield@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/textfield@npm:4.0.0"
+  dependencies:
+    "@material/animation": ^4.0.0
+    "@material/base": ^4.0.0
+    "@material/density": ^4.0.0
+    "@material/dom": ^4.0.0
+    "@material/floating-label": ^4.0.0
+    "@material/line-ripple": ^4.0.0
+    "@material/notched-outline": ^4.0.0
+    "@material/ripple": ^4.0.0
+    "@material/rtl": ^4.0.0
+    "@material/shape": ^4.0.0
+    "@material/theme": ^4.0.0
+    "@material/typography": ^4.0.0
+    tslib: ^1.9.3
+  checksum: d64c47e92a73bc374ee8e72d993b7c5482f28b37e053c3705ce2fe1425b9dfdce3aa7e252ae5e162781e0cc9ee3cb02108267e430417787f87ecc187b9e792f3
+  languageName: node
+  linkType: hard
+
+"@material/theme@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/theme@npm:3.1.0"
+  dependencies:
+    "@material/feature-targeting": ^3.1.0
+  checksum: d667ea629c2f22dc0c91a8d6c3cb3fb5417743c9b24c2329b5404e85df43917768edd069acbf6b93a5f2ba84fd0351d37ad2f254df457c221f3bd713536f9505
+  languageName: node
+  linkType: hard
+
+"@material/theme@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/theme@npm:4.0.0"
+  dependencies:
+    "@material/feature-targeting": ^4.0.0
+  checksum: d55caee243ca0e4033054d3673232245f956ef1c58b760841bcc22876f68ac212f404121542cfc88d103b1a895ede1283315ffcc7da96bdc088071c480bdf7e6
+  languageName: node
+  linkType: hard
+
+"@material/typography@npm:^3.1.0":
+  version: 3.1.0
+  resolution: "@material/typography@npm:3.1.0"
+  dependencies:
+    "@material/feature-targeting": ^3.1.0
+  checksum: 9e42085753f12ffe516d00b3f01abb8699be4c7b0a68c9317efc421cd3c4a5871bd2e0095bc4e02c5d73b1cc281e35d1a269ed29c637eaa4a1b11f9e0f48690e
+  languageName: node
+  linkType: hard
+
+"@material/typography@npm:^4.0.0":
+  version: 4.0.0
+  resolution: "@material/typography@npm:4.0.0"
+  dependencies:
+    "@material/feature-targeting": ^4.0.0
+  checksum: 489140aa0d233384b952e3d6c6ed2517b96a927ed3e8346b5ba6babe1743c9d6c5469b3218061b932ebc407dc0b796ba238682f1f716d981d8ef966e02835789
+  languageName: node
+  linkType: hard
+
+"diglett-yarn-berry@workspace:.":
+  version: 0.0.0-use.local
+  resolution: "diglett-yarn-berry@workspace:."
+  dependencies:
+    "@material/button": ^3.2.0
+    "@material/textfield": ^4.0.0
+  languageName: unknown
+  linkType: soft
+
+"tslib@npm:^1.9.3":
+  version: 1.10.0
+  resolution: "tslib@npm:1.10.0"
+  checksum: 1d0450dc6f64b918b14acaf3b956ebe1c72d7401c632adce932a60e3cd8d2a70f6040ceef6a7c3561146c3f29bcf584c41c2e09a5d20a27d6c3057f0d5f2a836
+  languageName: node
+  linkType: hard
diff --git a/test/parse-yarn-descriptor.spec.js b/test/parse-yarn-descriptor.spec.js
new file mode 100644
index 0000000..470b9b0
--- /dev/null
+++ b/test/parse-yarn-descriptor.spec.js
@@ -0,0 +1,39 @@
+const parseYarnDescriptor = require('../src/parseYarnDescriptor');
+
+describe('parse-yarn-descriptor', () => {
+  it('should parse a yarn v1 descriptor', () => {
+    expect(parseYarnDescriptor('hest@1.0.0')).toEqual({
+      packageName: 'hest',
+      version: '1.0.0',
+    });
+  });
+
+  it('should parse a yarn berry descriptor with protocol', () => {
+    expect(parseYarnDescriptor('hest@npm:1.0.0')).toEqual({
+      packageName: 'hest',
+      version: '1.0.0',
+    });
+  });
+
+  it('should parse a yarn berry descriptor with scope', () => {
+    expect(parseYarnDescriptor('@snel/hest@1.0.0')).toEqual({
+      packageName: '@snel/hest',
+      version: '1.0.0',
+    });
+  });
+
+  it('should parse a yarn berry descriptor with scope and protocol', () => {
+    expect(parseYarnDescriptor('@snel/hest@npm:1.0.0')).toEqual({
+      packageName: '@snel/hest',
+      version: '1.0.0',
+    });
+  });
+
+  it('should throw an error if the descriptor is invalid', () => {
+    expect(() => parseYarnDescriptor('invalid')).toThrow();
+  });
+
+  it('should throw an error if the descriptor is undefined', () => {
+    expect(() => parseYarnDescriptor()).toThrow();
+  });
+});
diff --git a/test/single-project.spec.js b/test/single-project.spec.js
index 5341a09..e003834 100644
--- a/test/single-project.spec.js
+++ b/test/single-project.spec.js
@@ -1,4 +1,3 @@
-const path = require('path');
 const { exec, getFixturePath } = require('./helpers');
 
 describe.each([
@@ -29,28 +28,31 @@ describe.each([
     });
   });
 
-  describe('Package with duplicate dependencies', () => {
-    const fixture = getFixturePath('regular');
-    it('fails with 9 duplicate dependencies', async () => {
-      const { stderr } = await exec([command, fixture]);
-      expect(stderr).toContain('Found 9 duplicate dependencies');
-    });
+  describe.each(['regular', 'yarn-berry'])(
+    '%s package with duplicate dependencies',
+    fixtureName => {
+      const fixture = getFixturePath(fixtureName);
+      it('fails with 9 duplicate dependencies', async () => {
+        const { stderr } = await exec([command, fixture]);
+        expect(stderr).toContain('Found 9 duplicate dependencies');
+      });
 
-    it('passes with non-matching filter', async () => {
-      const { stderr } = await exec([command, fixture, '--filter', 'hest']);
-      expect(stderr).toBeFalsy();
-    });
+      it('passes with non-matching filter', async () => {
+        const { stderr } = await exec([command, fixture, '--filter', 'hest']);
+        expect(stderr).toBeFalsy();
+      });
 
-    it('fails with matching filter', async () => {
-      const { stderr } = await exec([
-        command,
-        fixture,
-        '--filter',
-        '^@material/ripple$',
-      ]);
-      expect(stderr).toContain('Found 1 duplicate dependency');
-    });
-  });
+      it('fails with matching filter', async () => {
+        const { stderr } = await exec([
+          command,
+          fixture,
+          '--filter',
+          '^@material/ripple$',
+        ]);
+        expect(stderr).toContain('Found 1 duplicate dependency');
+      });
+    }
+  );
 
   describe('Package with duplicate devDependencies', () => {
     const fixture = getFixturePath('dev-dependencies');
diff --git a/yarn.lock b/yarn.lock
index 0d81f25..b464b82 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -643,6 +643,11 @@ argparse@^1.0.7:
   dependencies:
     sprintf-js "~1.0.2"
 
+argparse@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/argparse/-/argparse-2.0.1.tgz#246f50f3ca78a3240f6c997e8a9bd1eac49e4b38"
+  integrity sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==
+
 arr-diff@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/arr-diff/-/arr-diff-4.0.0.tgz#d6461074febfec71e7e15235761a329a5dc7c520"
@@ -2169,6 +2174,13 @@ js-yaml@^3.13.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-4.1.0.tgz#c1fb65f8f5017901cdd2c951864ba18458a10602"
+  integrity sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==
+  dependencies:
+    argparse "^2.0.1"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"