autoprefixer-rails 10.3 in unstable is broken

--- a/Gemfile
+++ b/Gemfile
@@ -281,7 +281,7 @@
 gem 'rack-proxy', '~> 0.6.0'
 
 gem 'sassc-rails', '~> 2.1'
-gem 'autoprefixer-rails', '10.2.5.1'
+gem 'autoprefixer-rails', '~> 10.2'
 gem 'terser', '~> 1.0','>= 1.0.2'
 
 gem 'addressable', '~> 2.8'