diff --git a/Gemfile.lock b/Gemfile.lock
index bd943e2162..95226750c7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -135,7 +135,7 @@ GEM
     crack (0.4.5)
       rexml
     crass (1.0.6)
-    cssbundling-rails (1.3.0)
+    cssbundling-rails (1.3.1)
       railties (>= 6.0.0)
     cuprite (0.14.3)
       capybara (~> 3.0)