diff --git a/sample-project/package.json b/sample-project/package.json
index 5dd1f604..f9f7e693 100644
--- a/sample-project/package.json
+++ b/sample-project/package.json
@@ -25,6 +25,6 @@
     "eslint-plugin-jest": "21.17.0",
     "eslint-plugin-prettier": "2.6.0",
     "eslint-plugin-react": "7.7.0",
-    "prettier": "1.13.3"
+    "prettier": "1.13.4"
   }
 }
diff --git a/sample-project/yarn.lock b/sample-project/yarn.lock
index d397d818..1903c9f2 100644
--- a/sample-project/yarn.lock
+++ b/sample-project/yarn.lock
@@ -1077,9 +1077,9 @@ prelude-ls@~1.1.2:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/prelude-ls/-/prelude-ls-1.1.2.tgz#21932a549f5e52ffd9a827f570e04be62a97da54"
 
-prettier@1.13.3:
-  version "1.13.3"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.13.3.tgz#e74c09a7df6519d472ca6febaa37cf7addb48a20"
+prettier@1.13.4:
+  version "1.13.4"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.13.4.tgz#31bbae6990f13b1093187c731766a14036fa72e6"
 
 process-nextick-args@~1.0.6:
   version "1.0.7"