diff --git a/package-lock.json b/package-lock.json
index d06cd63..3d4f749 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -31,9 +31,9 @@
       "integrity": "sha512-gubcQ8Sn2G5AO1KhjvLpoFrutV7o/ZJ7wCDBC1IKgNI8R2vadIxTystJxAFqkb9boQ7tyRrZ6FwM5EL5ZYfJrg=="
     },
     "yarn": {
-      "version": "1.22.0",
-      "resolved": "https://registry.npmjs.org/yarn/-/yarn-1.22.0.tgz",
-      "integrity": "sha512-KMHP/Jq53jZKTY9iTUt3dIVl/be6UPs2INo96+BnZHLKxYNTfwMmlgHTaMWyGZoO74RI4AIFvnWhYrXq2USJkg=="
+      "version": "1.22.13",
+      "resolved": "https://registry.npmjs.org/yarn/-/yarn-1.22.13.tgz",
+      "integrity": "sha512-G8qG4t7Ef5cLVpzbM3HWWsow4hpfeSCfKtMnjfERmp9V5qSCOKz0uGAIQCM/x3gWfCzH8Bvb4hl3ZfhG/XD1Jg=="
     }
   }
 }
diff --git a/package.json b/package.json
index 746930f..ce049cc 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "big.js": "^5.2.2",
     "deep-equal": "^1.0.1",
     "typescript": "^3.6.0-dev.20190810",
-    "yarn": "^1.22.0"
+    "yarn": "^1.22.13"
   },
   "devDependencies": {
     "prettier": "^1.18.2"
diff --git a/yarn.lock b/yarn.lock
index 5df112c..a864767 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -87,7 +87,7 @@ typescript@^3.6.0-dev.20190810:
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.3.tgz#fea942fabb20f7e1ca7164ff626f1a9f3f70b4da"
   integrity sha512-N7bceJL1CtRQ2RiG0AQME13ksR7DiuQh/QehubYcghzv20tnh+MQnQIuJddTmsbqYj+dztchykemz0zFzlvdQw==
 
-yarn@^1.22.0:
-  version "1.22.0"
-  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.0.tgz#acf82906e36bcccd1ccab1cfb73b87509667c881"
-  integrity sha512-KMHP/Jq53jZKTY9iTUt3dIVl/be6UPs2INo96+BnZHLKxYNTfwMmlgHTaMWyGZoO74RI4AIFvnWhYrXq2USJkg==
+yarn@^1.22.13:
+  version "1.22.13"
+  resolved "https://registry.yarnpkg.com/yarn/-/yarn-1.22.13.tgz#8789ef23b630fe99b819b044f4b7b93ab1bc1b8f"
+  integrity sha512-G8qG4t7Ef5cLVpzbM3HWWsow4hpfeSCfKtMnjfERmp9V5qSCOKz0uGAIQCM/x3gWfCzH8Bvb4hl3ZfhG/XD1Jg==