diff --git a/package.json b/package.json
index 7b1353dc9..39cfadb9e 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "lodash": "^4.17.4",
     "marksy": "^6.0.2",
     "normalize.css": "^7.0.0",
-    "prismjs": "^1.6.0",
+    "prismjs": "1.6.0",
     "react-emotion": "^8.0.8",
     "react-live": "^1.8.0-2",
     "react-redux": "^5.0.5",
diff --git a/yarn.lock b/yarn.lock
index c05158563..fcaab163d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7251,6 +7251,12 @@ pretty-format@^22.4.0:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
+prismjs@1.6.0:
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.6.0.tgz#118d95fb7a66dba2272e343b345f5236659db365"
+  optionalDependencies:
+    clipboard "^1.5.5"
+
 prismjs@^1.6.0:
   version "1.8.3"
   resolved "https://registry.yarnpkg.com/prismjs/-/prismjs-1.8.3.tgz#4a3d140be5f2614a8987ca2330733a40d8ad207b"