diff --git a/fixtures/rails51_webpacker/yarn.lock b/fixtures/rails51_webpacker/yarn.lock
index ddd2336b0..72ea95e1e 100644
--- a/fixtures/rails51_webpacker/yarn.lock
+++ b/fixtures/rails51_webpacker/yarn.lock
@@ -2739,8 +2739,8 @@ invert-kv@^1.0.0:
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
 
 ip@^1.1.0, ip@^1.1.5:
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/ip/-/ip-1.1.5.tgz#bdded70114290828c0a039e72ef25f5aaec4354a"
+  version "1.1.9"
+  resolved "https://registry.yarnpkg.com/ip/-/ip-1.1.9.tgz#8dfbcc99a754d07f425310b86a99546b1151e396"
 
 ipaddr.js@1.5.2:
   version "1.5.2"