diff --git a/Gemfile.lock b/Gemfile.lock
index aaecd6c68..2b74d4948 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -124,7 +124,7 @@ GEM
     concurrent-ruby (1.2.2)
     connection_pool (2.4.1)
     crass (1.0.6)
-    cssbundling-rails (1.3.0)
+    cssbundling-rails (1.3.1)
       railties (>= 6.0.0)
     database_cleaner-active_record (2.1.0)
       activerecord (>= 5.a)