diff --git a/Gemfile.lock b/Gemfile.lock
index 60739a1..676631d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -75,7 +75,7 @@ GEM
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
     ast (2.4.2)
-    autoprefixer-rails (10.4.19.0)
+    autoprefixer-rails (10.4.21.0)
       execjs (~> 2)
     base64 (0.2.0)
     bcrypt (3.1.20)