diff --git a/Gemfile b/Gemfile
index 605f04a..24ae44a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 # encoding: utf-8
 source 'https://rubygems.org'
 
-gem 'autoprefixer-rails', '~>8.1.0' # lock at 8.1.0
+gem 'autoprefixer-rails', '~>9.7.2' # lock at 8.1.0
 gem 'bootstrap-sass', '~> 3.3.7' # lock at 3.3.7
 gem 'bootstrap_form', '~> 2.7.0'
 gem 'capistrano', '~> 3.10.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index a6c8e1c..938b470 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -43,7 +43,7 @@ GEM
       sshkit (>= 1.6.1, != 1.7.0)
     arel (6.0.4)
     ast (2.3.0)
-    autoprefixer-rails (8.1.0.1)
+    autoprefixer-rails (9.7.2)
       execjs
     bootstrap-sass (3.3.7)
       autoprefixer-rails (>= 5.2.1)
@@ -328,7 +328,7 @@ PLATFORMS
 
 DEPENDENCIES
   activerecord-postgresql-adapter
-  autoprefixer-rails (~> 8.1.0)
+  autoprefixer-rails (~> 9.7.2)
   bootstrap-sass (~> 3.3.7)
   bootstrap_form (~> 2.7.0)
   capistrano (~> 3.10.2)