diff --git a/Gemfile.lock b/Gemfile.lock
index 466a4b43..6743ff4a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
-    erb (6.0.3)
+    erb (6.0.4)
     ethon (0.16.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)