diff --git a/Gemfile.lock b/Gemfile.lock
index b7128caf45..10a944fa68 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -682,7 +682,8 @@ GEM
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.9.1)
     websocket (1.2.11)
-    websocket-driver (0.7.6)
+    websocket-driver (0.7.7)
+      base64
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
     whenever (1.0.0)