diff --git a/Gemfile b/Gemfile
index 29ea181f96..16bd19622c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -63,7 +63,7 @@ gem 'diff-lcs', '~>1.5'
 gem 'ace-rails-ap', '~>4.5'
 
 # auto css prefixer
-gem 'autoprefixer-rails', '~>10.4.13'
+gem 'autoprefixer-rails', '~>10.4.15'
 
 # saml authentication
 gem 'devise', '~>4.9.2'
diff --git a/Gemfile.lock b/Gemfile.lock
index 22d14ba42c..b597d9922e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
       rake (>= 10.4, < 14.0)
     ast (2.4.2)
     attr_required (1.0.1)
-    autoprefixer-rails (10.4.13.0)
+    autoprefixer-rails (10.4.15.0)
       execjs (~> 2)
     bcrypt (3.1.18)
     bcrypt_pbkdf (1.1.0)
@@ -526,7 +526,7 @@ DEPENDENCIES
   ace-rails-ap (~> 4.5)
   after_commit_everywhere (~> 1.3.1)
   annotate (~> 3.2.0)
-  autoprefixer-rails (~> 10.4.13)
+  autoprefixer-rails (~> 10.4.15)
   bcrypt_pbkdf
   bootsnap (~> 1.16.0)
   builder (~> 3.2.4)