diff --git a/Gemfile.lock b/Gemfile.lock
index 51b9c20a..84a8a97c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -53,7 +53,7 @@ GEM
       activerecord (>= 3.0)
     arel (6.0.4)
     ast (2.4.0)
-    autoprefixer-rails (9.0.0)
+    autoprefixer-rails (8.6.5)
       execjs
     bcrypt (3.1.12)
     bootstrap-sass (3.3.3)