diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7afda9ae..9b19de67 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -26,7 +26,6 @@ jobs:
         gemfile:
           - rack_3
           - rack_2
-          - rack_1
           - rails_7_0
           - rails_6_1
           - rails_6_0
@@ -41,32 +40,24 @@ jobs:
           - active_support_redis_cache_store_pooled
           - redis_store
         exclude:
-          - gemfile: rack_1
-            ruby: 3.2.2
           - gemfile: rails_5_2
             ruby: 3.2.2
           - gemfile: rails_4_2
             ruby: 3.2.2
           - gemfile: dalli2
             ruby: 3.2.2
-          - gemfile: rack_1
-            ruby: 3.1.4
           - gemfile: rails_5_2
             ruby: 3.1.4
           - gemfile: rails_4_2
             ruby: 3.1.4
           - gemfile: dalli2
             ruby: 3.1.4
-          - gemfile: rack_1
-            ruby: 3.0.6
           - gemfile: rails_5_2
             ruby: 3.0.6
           - gemfile: rails_4_2
             ruby: 3.0.6
           - gemfile: dalli2
             ruby: 3.0.6
-          - gemfile: rack_1
-            ruby: 2.7.8
           - gemfile: rails_4_2
             ruby: 2.7.8
           - gemfile: rails_7_0
diff --git a/Appraisals b/Appraisals
index 4f222a0f..d8f402b7 100644
--- a/Appraisals
+++ b/Appraisals
@@ -8,19 +8,6 @@ appraise "rack_2" do
   gem "rack", "~> 2.0"
 end
 
-appraise "rack_1" do
-  # Override activesupport and actionpack version constraints by making
-  # it more loose so it's compatible with rack 1.6.x
-  gem "actionpack", ">= 4.2"
-  gem "activesupport", ">= 4.2"
-
-  gem "rack", "~> 1.6"
-
-  # Override rack-test version constraint by making it more loose
-  # so it's compatible with actionpack 4.2.x
-  gem "rack-test", ">= 0.6"
-end
-
 appraise 'rails_7-0' do
   gem 'railties', '~> 7.0.0'
 end
diff --git a/gemfiles/rack_1.gemfile b/gemfiles/rack_1.gemfile
deleted file mode 100644
index 2390b859..00000000
--- a/gemfiles/rack_1.gemfile
+++ /dev/null
@@ -1,10 +0,0 @@
-# This file was generated by Appraisal
-
-source "https://rubygems.org"
-
-gem "actionpack", ">= 4.2"
-gem "activesupport", ">= 4.2"
-gem "rack", "~> 1.6"
-gem "rack-test", ">= 0.6"
-
-gemspec path: "../"