Use released arel

Gemfile

@@ -6,8 +6,6 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 gemspec
 
-gem "arel", github: "rails/arel"
-
 # We need a newish Rake since Active Job sets its test tasks' descriptions.
 gem "rake", ">= 11.1"
 

Gemfile.lock

@@ -34,12 +34,6 @@ GIT
       event_emitter
       websocket
 
-GIT
-  remote: https://github.com/rails/arel.git
-  revision: 42510bf71472e2e35d9becb546edd05562672344
-  specs:
-    arel (9.0.0.alpha)
-
 GIT
   remote: https://github.com/rails/sass-rails.git
   revision: bb5c1d34e8acad2e2960cc785184ffe17d7b3bca
@@ -94,7 +88,7 @@ PATH
     activerecord (5.2.0.alpha)
       activemodel (= 5.2.0.alpha)
       activesupport (= 5.2.0.alpha)
-      arel (= 9.0.0.alpha)
+      arel (>= 9.0)
     activestorage (5.2.0.alpha)
       actionpack (= 5.2.0.alpha)
       activerecord (= 5.2.0.alpha)
@@ -142,6 +136,7 @@ GEM
     amq-protocol (2.2.0)
     archive-zip (0.7.0)
       io-like (~> 0.3.0)
+    arel (9.0.0)
     ast (2.3.0)
     aws-partitions (1.20.0)
     aws-sdk-core (3.3.0)
@@ -358,6 +353,7 @@ GEM
     mysql2 (0.4.9-x64-mingw32)
     mysql2 (0.4.9-x86-mingw32)
     nio4r (2.1.0)
+    nio4r (2.1.0-java)
     nokogiri (1.8.0)
       mini_portile2 (~> 2.2.0)
     nokogiri (1.8.0-java)
@@ -503,6 +499,8 @@ GEM
     websocket (1.2.4)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
+    websocket-driver (0.6.5-java)
+      websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.2)
     xpath (2.1.0)
       nokogiri (~> 1.3)
@@ -517,7 +515,6 @@ DEPENDENCIES
   activerecord-jdbcmysql-adapter (>= 1.3.0)
   activerecord-jdbcpostgresql-adapter (>= 1.3.0)
   activerecord-jdbcsqlite3-adapter (>= 1.3.0)
-  arel!
   aws-sdk-s3
   azure-storage
   backburner
@@ -579,4 +576,4 @@ DEPENDENCIES
   websocket-client-simple!
 
 BUNDLED WITH
-   1.15.4
+   1.16.0

activerecord/activerecord.gemspec

@@ -31,5 +31,5 @@
   s.add_dependency "activesupport", version
   s.add_dependency "activemodel",   version
 
-  s.add_dependency "arel", "9.0.0.alpha"
+  s.add_dependency "arel", ">= 9.0"
 end

railties/lib/rails/generators/app_base.rb

@@ -266,17 +266,14 @@ def version
       end
 
       def rails_gemfile_entry
-        dev_edge_common = [
-          GemfileEntry.github("arel", "rails/arel"),
-        ]
         if options.dev?
           [
             GemfileEntry.path("rails", Rails::Generators::RAILS_DEV_PATH)
-          ] + dev_edge_common
+          ]
         elsif options.edge?
           [
             GemfileEntry.github("rails", "rails/rails")
-          ] + dev_edge_common
+          ]
         else
           [GemfileEntry.version("rails",
                             rails_version_specifier,