diff --git a/Gemfile.lock b/Gemfile.lock
index b9405e27b12..656e96650a6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,7 +104,7 @@ GEM
     css_parser (1.11.0)
       addressable
     debug_inspector (1.1.0)
-    diff-lcs (1.4.4)
+    diff-lcs (1.5.0)
     diffy (3.4.0)
     discourse-ember-rails (0.18.6)
       active_model_serializers