diff --git a/Gemfile.lock b/Gemfile.lock
index 08dc53e..b8ed2be 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -14,8 +14,8 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.6)
-    concurrent-ruby (1.1.10)
+    commonmarker (0.23.7)
+    concurrent-ruby (1.2.0)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)
     em-websocket (0.5.3)