diff --git a/Gemfile.lock b/Gemfile.lock
index a8d88b6..641140e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -11,7 +11,7 @@ GEM
     event_emitter (0.2.5)
     eventmachine (1.0.9.1)
     minitest (5.8.4)
-    rake (10.5.0)
+    rake (13.0.1)
     websocket (1.2.2)
     websocket-eventmachine-base (1.2.0)
       eventmachine (~> 1.0)