diff --git a/Gemfile.lock b/Gemfile.lock
index b1e447f..9c048a0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
       execjs
     coffee-script-source (1.11.1)
     colorator (1.1.0)
-    commonmarker (0.23.5)
+    commonmarker (0.23.7)
     concurrent-ruby (1.1.10)
     dnsruby (1.61.9)
       simpleidn (~> 0.1)
@@ -287,6 +287,7 @@ GEM
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.8.2)
+    unf_ext (0.0.8.2-x64-mingw32)
     unicode-display_width (1.8.0)
     webrick (1.7.0)
     yell (2.2.2)