diff --git a/Gemfile.lock b/Gemfile.lock
index 2afbb5a0a..5457ab5da 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -127,7 +127,8 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    commonmarker (0.23.10)
+    commonmarker (1.0.4)
+      rb_sys (~> 0.9)
     concurrent-ruby (1.2.2)
     crass (1.0.6)
     css_parser (1.14.0)
@@ -348,6 +349,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
+    rb_sys (0.9.86)
     regexp_parser (2.9.0)
     rexml (3.2.6)
     rolify (6.0.1)