diff --git a/package.json b/package.json
index 3c4d59c2c..343b96942 100644
--- a/package.json
+++ b/package.json
@@ -101,7 +101,7 @@
     "kcheck": "^2.0.0",
     "madge": "^1.6.0",
     "minimist": "^1.2.0",
-    "prettier": "1.5.2",
+    "prettier": "1.12.1",
     "prop-types": "^15.6.0",
     "react": "16.3.1",
     "react-dom": "16.3.1",
diff --git a/website/package.json b/website/package.json
index aefdbfe34..c9cf380ab 100644
--- a/website/package.json
+++ b/website/package.json
@@ -17,7 +17,7 @@
   "devDependencies": {
     "chalk": "^1.1.3",
     "glob": "^7.1.2",
-    "prettier": "^1.4.4"
+    "prettier": "1.12.1"
   },
   "engines": {
     "node": ">=6.1.0"
diff --git a/website/yarn.lock b/website/yarn.lock
index e1333468a..a35405a41 100644
--- a/website/yarn.lock
+++ b/website/yarn.lock
@@ -87,9 +87,9 @@ path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
 
-prettier@^1.4.4:
-  version "1.4.4"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.4.4.tgz#a8d1447b14c9bf67e6d420dcadd10fb9a4fad65a"
+prettier@1.12.1:
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"
 
 strip-ansi@^3.0.0:
   version "3.0.1"
diff --git a/yarn.lock b/yarn.lock
index 9ec3eb00f..9bba2288c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6989,9 +6989,9 @@ preserve@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/preserve/-/preserve-0.2.0.tgz#815ed1f6ebc65926f865b310c0713bcb3315ce4b"
 
-prettier@1.5.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.5.2.tgz#7ea0751da27b93bfb6cecfcec509994f52d83bb3"
+prettier@1.12.1:
+  version "1.12.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.12.1.tgz#c1ad20e803e7749faf905a409d2367e06bbe7325"
 
 prettier@^1.5.3:
   version "1.11.1"