diff --git a/primus/yarn.lock b/primus/yarn.lock
index 2f4552b6..6ea9c351 100644
--- a/primus/yarn.lock
+++ b/primus/yarn.lock
@@ -270,7 +270,7 @@ eventemitter3@^4.0.0, eventemitter3@~4.0.0:
 extendible@0.1.x:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/extendible/-/extendible-0.1.1.tgz#e2a37ed87129fb4f9533e8a8d7506230a539c905"
-  integrity sha1-4qN+2HEp+0+VM+io11BiMKU5yQU=
+  integrity sha512-AglckQA0TJV8/ZmhQcNmaaFcFFPXFIoZbfuoQOlGDK7Jh/roWotYzJ7ik1FBBCHBr8n7CgTR8lXXPAN8Rfb7rw==
 
 forwarded-for@~1.1.0:
   version "1.1.0"
@@ -395,9 +395,9 @@ optional-require@^1.0.2:
   integrity sha512-RV2Zp2MY2aeYK5G+B/Sps8lW5NHAzE5QClbFP15j+PWmP+T9PxlJXBOOLoSAdgwFvS4t0aMR4vpedMkbHfh0nA==
 
 predefine@0.1.x:
-  version "0.1.2"
-  resolved "https://registry.yarnpkg.com/predefine/-/predefine-0.1.2.tgz#2aa92b4496bc1f8554e43a45f76bfbe50d33d37f"
-  integrity sha1-KqkrRJa8H4VU5DpF92v75Q0z038=
+  version "0.1.3"
+  resolved "https://registry.yarnpkg.com/predefine/-/predefine-0.1.3.tgz#833d67afa815c42707845449dbc88d8a307744e5"
+  integrity sha512-Nq6APFC5OtQRl5TmMk6RlGwl6UOCtEqa+5ZTbKFp6tMw4wdMUa7Rief0UNE3fV5BgQahJ70QmDgeOog8RE9FMw==
   dependencies:
     extendible "0.1.x"