diff --git a/Gemfile.lock b/Gemfile.lock
index 9c9292e4..2e3f922d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,7 +112,7 @@ GEM
     concurrent-ruby (1.2.2)
     connection_pool (2.4.1)
     crass (1.0.6)
-    cssbundling-rails (1.2.0)
+    cssbundling-rails (1.3.1)
       railties (>= 6.0.0)
     cuprite (0.14.3)
       capybara (~> 3.0)