diff --git a/performance_rnn/yarn.lock b/performance_rnn/yarn.lock
index 80841d5..21ee32b 100644
--- a/performance_rnn/yarn.lock
+++ b/performance_rnn/yarn.lock
@@ -1028,8 +1028,9 @@ seedrandom@~2.4.3:
   resolved "https://registry.yarnpkg.com/seedrandom/-/seedrandom-2.4.3.tgz#2438504dad33917314bff18ac4d794f16d6aaecc"
 
 semver@^5.1.0:
-  version "5.5.0"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.5.0.tgz#dc4bbc7a6ca9d916dee5d43516f0092b58f7b8ab"
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.2.tgz#48d55db737c3287cd4835e17fa13feace1c41ef8"
+  integrity sha512-cBznnQ9KjJqU67B52RMC65CMarK2600WFnbkcaiwWq3xy/5haFJlshgnpjovMVJ+Hff49d8GEn0b87C5pDQ10g==
 
 sha.js@^2.4.0, sha.js@^2.4.8, sha.js@~2.4.4:
   version "2.4.11"