diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 46b960c..48962b2 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -20,7 +20,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.4)
+    commonmarker (0.23.9)
     concurrent-ruby (1.1.10)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)