diff --git a/Gemfile.lock b/Gemfile.lock
index 4e5eea12..e3360f15 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,7 +55,7 @@ GEM
     coffee-script-source (1.12.2)
     colorator (0.1)
     colorize (0.8.1)
-    commonmarker (0.17.6)
+    commonmarker (0.17.7)
       ruby-enum (~> 0.5)
     compass (1.0.3)
       chunky_png (~> 1.2)