diff --git a/Gemfile.lock b/Gemfile.lock
index ad8eb66..797aadc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
-    erb (6.0.2)
+    erb (6.0.4)
     eventmachine (1.2.7)
     execjs (2.10.1)
     ffi (1.17.4)