diff --git a/Gemfile.lock b/Gemfile.lock
index a9752f6a..569da551 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -134,7 +134,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    commonmarker (0.23.7)
+    commonmarker (0.23.9)
     concurrent-ruby (1.1.10)
     crack (0.4.5)
       rexml