diff --git a/package.json b/package.json
index 2d3baa7..4c49070 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,7 @@
     "README.md",
     "LICENSE"
   ],
+  "types": "./types/index.d.ts",
   "scripts": {
     "build": "babel src -d dist --ignore *.test.js",
     "contributor": "all-contributors add",
@@ -41,6 +42,7 @@
   },
   "homepage": "https://github.com/mattphillips/jest-chain#readme",
   "devDependencies": {
+    "@types/jest": "^23.3.7",
     "all-contributors-cli": "^4.11.1",
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",
diff --git a/types/index.d.ts b/types/index.d.ts
new file mode 100644
index 0000000..cf79a17
--- /dev/null
+++ b/types/index.d.ts
@@ -0,0 +1,13 @@
+declare namespace jest {
+  type ChainedMatchers<R> = { [K in keyof jest.Matchers<R>]: jest.Matchers<ChainedMatchers<R>>[K] };
+
+  interface Expect {
+    /**
+     * The `expect` function is used every time you want to test a value.
+     * You will rarely call `expect` by itself.
+     *
+     * @param actual The value to apply matchers against.
+     */
+    <T = any>(actual: T): ChainedMatchers<T>;
+  }
+}
diff --git a/yarn.lock b/yarn.lock
index 307c2a9..635e888 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -92,6 +92,10 @@
     lodash "^4.2.0"
     to-fast-properties "^2.0.0"
 
+"@types/jest@^23.3.7":
+  version "23.3.7"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-23.3.7.tgz#77f9a4332ccf8db680a31818ade3ee454c831a79"
+
 abab@^1.0.4:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/abab/-/abab-1.0.4.tgz#5faad9c2c07f60dd76770f71cf025b62a63cfd4e"