diff --git a/_examples/gitbook/yarn.lock b/_examples/gitbook/yarn.lock
index 5c7240b..69bce57 100644
--- a/_examples/gitbook/yarn.lock
+++ b/_examples/gitbook/yarn.lock
@@ -3257,8 +3257,8 @@ semver-regex@^1.0.0:
   resolved "https://registry.yarnpkg.com/semver-regex/-/semver-regex-1.0.0.tgz#92a4969065f9c70c694753d55248fc68f8f652c9"
 
 semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@^5.5.0:
-  version "5.6.0"
-  resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
+  version "5.7.2"
+  resolved "https://registry.yarnpkg.com/semver/-/semver-5.7.2.tgz#48d55db737c3287cd4835e17fa13feace1c41ef8"
 
 send@0.16.2:
   version "0.16.2"