diff --git a/package-lock.json b/package-lock.json
index a9b4b30..8080e19 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -269,9 +269,9 @@
       "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
     },
     "yarn": {
-      "version": "1.21.1",
-      "resolved": "https://registry.npmjs.org/yarn/-/yarn-1.21.1.tgz",
-      "integrity": "sha512-dQgmJv676X/NQczpbiDtc2hsE/pppGDJAzwlRiADMTvFzYbdxPj2WO4PcNyriSt2c4jsCMpt8UFRKHUozt21GQ=="
+      "version": "1.22.0",
+      "resolved": "https://registry.npmjs.org/yarn/-/yarn-1.22.0.tgz",
+      "integrity": "sha512-KMHP/Jq53jZKTY9iTUt3dIVl/be6UPs2INo96+BnZHLKxYNTfwMmlgHTaMWyGZoO74RI4AIFvnWhYrXq2USJkg=="
     }
   }
 }
diff --git a/package.json b/package.json
index 91abd1c..d1cc6e0 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
     "chart.xkcd": "^1.1.12",
     "connect": "^3.6.5",
     "serve-static": "^1.13.1",
-    "yarn": "^1.7.0"
+    "yarn": "^1.22.0"
   },
   "license": "MIT"
 }
diff --git a/yarn.lock b/yarn.lock
index 3f8bb15..6a3befa 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -214,6 +214,6 @@ utils-merge@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"
 
-yarn@^1.7.0:
-  version "1.22.10"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.10.tgz#c99daa06257c80f8fa2c3f1490724e394c26b18c"
+yarn@^1.22.0:
+  version "1.22.0"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.0.tgz#acf82906e36bcccd1ccab1cfb73b87509667c881"