diff --git a/Gemfile.lock b/Gemfile.lock
index 250c2c5..3803283 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -13,7 +13,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.17.9)
+    commonmarker (0.23.4)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.9)
     dnsruby (1.61.7)