diff --git a/Gemfile.lock b/Gemfile.lock
index 14dd404..f48995b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.13.0)
     public_suffix (4.0.7)
-    pygments.rb (2.3.0)
+    pygments.rb (2.3.1)
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)