diff --git a/package.json b/package.json
index efd6e54..7eceba9 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
     "flow-bin": "^0.104.0",
     "jest": "^24.8.0",
     "jest-fetch-mock": "^2.1.2",
-    "prettier": "^1.18.2",
+    "prettier": "1.18.2",
     "raf": "3.4.1",
     "react-dev-utils": "^5.0.0",
     "static-site-generator-webpack-plugin": "^3.4.1",
diff --git a/yarn.lock b/yarn.lock
index 85c518c..3972c5f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6635,7 +6635,7 @@ prelude-ls@~1.1.2:
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
   integrity sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=
 
-prettier@^1.18.2:
+prettier@1.18.2:
   version "1.18.2"
   resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.18.2.tgz#6823e7c5900017b4bd3acf46fe9ac4b4d7bda9ea"
   integrity sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==