diff --git a/playground/20-03-01-online-clipboard/package.json b/playground/20-03-01-online-clipboard/package.json
index fe019f2..091ff43 100644
--- a/playground/20-03-01-online-clipboard/package.json
+++ b/playground/20-03-01-online-clipboard/package.json
@@ -19,7 +19,7 @@
     "minireset.css": "^0.0.3",
     "promise-mysql": "^3.3.1",
     "vconsole": "^3.2.0",
-    "yarn": "^1.22.0"
+    "yarn": "^1.22.13"
   },
   "devDependencies": {
     "babel-core": "^6.26.3",
diff --git a/playground/20-03-01-online-clipboard/yarn.lock b/playground/20-03-01-online-clipboard/yarn.lock
index 06e9a29..dd8c5c0 100644
--- a/playground/20-03-01-online-clipboard/yarn.lock
+++ b/playground/20-03-01-online-clipboard/yarn.lock
@@ -1951,9 +1951,9 @@ wrappy@1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
 
-yarn@^1.22.0:
-  version "1.22.0"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.0.tgz#acf82906e36bcccd1ccab1cfb73b87509667c881"
+yarn@^1.22.13:
+  version "1.22.13"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.13.tgz#8789ef23b630fe99b819b044f4b7b93ab1bc1b8f"
 
 ylru@^1.2.0:
   version "1.2.1"