diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index d0124e2..15d6e3e 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -5,7 +5,7 @@ on: [push, pull_request, workflow_dispatch]
 jobs:
   build:
     name: >-
-      ${{ matrix.os }} ${{ matrix.ruby-version }}
+      ${{ matrix.os }} ${{ matrix.ruby-version }} ${{ matrix.gemfile }}
     runs-on: ${{ matrix.os }}
     timeout-minutes: 10
     strategy:
@@ -13,11 +13,27 @@ jobs:
       matrix:
         os: [ ubuntu-22.04, ubuntu-20.04 ]
         ruby-version: [ "2.4", "2.5", "2.6", "2.7", "3.0", "3.1", "3.2", "3.3" ]
+        gemfile:
+          - resque_1.22_redis_2.0
+          - resque_1.23_redis_3.0
+          - resque_1.24_redis_3.0
+          - resque_1.25_redis_3.0
+          - resque_1.27_redis_3.3
+          - resque_2.0_redis_4.0
+          - resque_2.1_redis_4.4
+          - resque_2.2_redis_4.6
+          - resque_2.3_redis_4.7
+          - resque_2.4_redis_4.8
+          - resque_2.5_redis_5.0
+          - resque_2.6_redis_5.2
 
     services:
       redis:
         image: redis
 
+    env:
+      BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.gemfile }}.gemfile
+
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby
diff --git a/.gitignore b/.gitignore
index ee67f61..46fb448 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,13 @@
 pkg/*
 *.gem
+*.gemfile.lock
+Gemfile.lock
 .bundle
+.ruby-version
 *.log
 *.pid
 examples/tmp/*
+spec/stdout
 tmp/*
 vendor
 tags
diff --git a/Appraisals b/Appraisals
new file mode 100644
index 0000000..2529cb0
--- /dev/null
+++ b/Appraisals
@@ -0,0 +1,77 @@
+appraise "resque-1.22-redis-2.0" do
+  gem "resque",          "1.22.0" # 2012-08-21
+  gem "redis-namespace", "1.0.3"  # 2011-05-17
+  gem "redis",           "2.2.2"  # 2011-08-04
+end
+
+appraise "resque-1.23-redis-2.0" do
+  gem "resque",          "1.23.1" # 2013-03-07
+  gem "redis-namespace", "1.1.0"  # 2011-08-15
+  gem "redis",           "2.2.2"  # 2011-08-04
+end
+
+appraise "resque-1.24-redis-3.0" do
+  gem "resque",          "1.24.0" # 2013-03-21
+  gem "redis-namespace", "1.2.2"  # 2013-08-03
+  gem "redis",           "3.0.7"  # 2014-01-21
+end
+
+appraise "resque-1.25-redis-3.0" do
+  gem "resque",          "1.25.2" # 2014-03-04
+  gem "redis-namespace", "1.4.1"  # 2013-12-04
+  gem "redis",           "3.0.7"  # 2014-01-21
+end
+
+appraise "resque-1.26-redis-3.2" do
+  gem "resque",          "1.26.0" # 2016-03-11
+  gem "redis-namespace", "1.5.2"  # 2015-03-30
+  gem "redis",           "3.2.2"  # 2015-11-16
+end
+
+appraise "resque-1.27-redis-3.3" do
+  gem "resque",          "1.27.4" # 2017-04-15
+  gem "redis-namespace", "1.6.0"  # 2017-11-03
+  gem "redis",           "3.3.5"  # 2017-09-28
+end
+
+appraise "resque-2.0-redis-4.0" do
+  gem "resque",          "2.0.0"  # 2018-11-06
+  gem "redis-namespace", "1.6.0"  # 2017-11-03
+  gem "redis",           "4.0.3"  # 2018-10-31
+end
+
+appraise "resque-2.1-redis-4.4" do
+  gem "resque",          "2.1.0"  # 2021-08-10
+  gem "redis-namespace", "1.7.0"  # 2019-12-11
+  gem "redis",           "4.4.0"  # 2021-07-28
+end
+
+appraise "resque-2.2-redis-4.6" do
+  gem "resque",          "2.2.1"  # 2022-03-27
+  gem "redis-namespace", "1.8.2"  # 2022-03-07
+  gem "redis",           "4.6.0"  # 2024-02-02
+end
+
+appraise "resque-2.3-redis-4.7" do
+  gem "resque",          "2.3.0"  # 2022-08-22
+  gem "redis-namespace", "1.9.0"  # 2022-08-13
+  gem "redis",           "4.7.1"  # 2022-07-01
+end
+
+appraise "resque-2.4-redis-4.8" do
+  gem "resque",          "2.4.0"  # 2022-09-06
+  gem "redis-namespace", "1.9.0"  # 2022-08-13
+  gem "redis",           "4.8.1"  # 2023-02-10
+end
+
+appraise "resque-2.5-redis-5.0" do
+  gem "resque",          "2.5.0"  # 2023-03-01
+  gem "redis-namespace", "1.10.0" # 2022-12-22
+  gem "redis",           "5.0.8"  # 2023-08-23
+end
+
+appraise "resque-2.6-redis-5.2" do
+  gem "resque",          "2.6.0"  # 2023-08-19
+  gem "redis-namespace", "1.11.0" # 2023-06-08
+  gem "redis",           "5.2.0"  # 2024-04-15
+end
diff --git a/Gemfile b/Gemfile
index b4e2a20..555dc07 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,3 +1,5 @@
 source "https://rubygems.org"
 
 gemspec
+
+gem "appraisal"
diff --git a/Gemfile.lock b/Gemfile.lock
deleted file mode 100644
index e7714b9..0000000
--- a/Gemfile.lock
+++ /dev/null
@@ -1,133 +0,0 @@
-PATH
-  remote: .
-  specs:
-    resque-pool (0.7.1)
-      rake (>= 10.0, < 14.0)
-      resque (>= 1.22, < 3)
-
-GEM
-  remote: https://rubygems.org/
-  specs:
-    activesupport (5.2.8.1)
-      concurrent-ruby (~> 1.0, >= 1.0.2)
-      i18n (>= 0.7, < 2)
-      minitest (~> 5.1)
-      tzinfo (~> 1.1)
-    aruba (1.1.2)
-      bundler (>= 1.17, < 3.0)
-      childprocess (>= 2.0, < 5.0)
-      contracts (>= 0.16.0, < 0.18.0)
-      cucumber (>= 2.4, < 7.0)
-      rspec-expectations (~> 3.4)
-      thor (~> 1.0)
-    builder (3.2.4)
-    childprocess (4.1.0)
-    concurrent-ruby (1.2.3)
-    contracts (0.16.1)
-    cucumber (4.1.0)
-      builder (~> 3.2, >= 3.2.3)
-      cucumber-core (~> 7.1, >= 7.1.0)
-      cucumber-create-meta (~> 1.0.0, >= 1.0.0)
-      cucumber-cucumber-expressions (~> 10.1, >= 10.1.0)
-      cucumber-gherkin (~> 14.0, >= 14.0.1)
-      cucumber-html-formatter (~> 7.0, >= 7.0.0)
-      cucumber-messages (~> 12.2, >= 12.2.0)
-      cucumber-wire (~> 3.1, >= 3.1.0)
-      diff-lcs (~> 1.3, >= 1.3, < 1.4)
-      multi_test (~> 0.1, >= 0.1.2)
-      sys-uname (~> 1.0, >= 1.0.2)
-    cucumber-core (7.1.0)
-      cucumber-gherkin (~> 14.0, >= 14.0.1)
-      cucumber-messages (~> 12.2, >= 12.2.0)
-      cucumber-tag-expressions (~> 2.0, >= 2.0.4)
-    cucumber-create-meta (1.0.0)
-      cucumber-messages (~> 12.2, >= 12.2.0)
-      sys-uname (~> 1.2, >= 1.2.1)
-    cucumber-cucumber-expressions (10.3.0)
-    cucumber-gherkin (14.2.0)
-      cucumber-messages (~> 12.4, >= 12.4.0)
-    cucumber-html-formatter (7.2.0)
-      cucumber-messages (~> 12.4, >= 12.4.0)
-    cucumber-messages (12.4.0)
-      protobuf-cucumber (~> 3.10, >= 3.10.8)
-    cucumber-tag-expressions (2.0.4)
-    cucumber-wire (3.1.0)
-      cucumber-core (~> 7.1, >= 7.1.0)
-      cucumber-cucumber-expressions (~> 10.1, >= 10.1.0)
-      cucumber-messages (~> 12.2, >= 12.2.0)
-    diff-lcs (1.3)
-    ffi (1.15.5)
-    hpricot (0.8.6)
-    i18n (1.14.5)
-      concurrent-ruby (~> 1.0)
-    middleware (0.1.0)
-    minitest (5.15.0)
-    mono_logger (1.1.2)
-    multi_json (1.15.0)
-    multi_test (0.1.2)
-    mustache (1.1.1)
-    mustermann (2.0.2)
-      ruby2_keywords (~> 0.0.1)
-    protobuf-cucumber (3.10.8)
-      activesupport (>= 3.2)
-      middleware
-      thor
-      thread_safe
-    rack (2.2.9)
-    rack-protection (2.2.4)
-      rack
-    rake (13.2.1)
-    rdiscount (2.2.7.3)
-    redis (4.8.1)
-    redis-namespace (1.11.0)
-      redis (>= 4)
-    resque (2.6.0)
-      mono_logger (~> 1.0)
-      multi_json (~> 1.0)
-      redis-namespace (~> 1.6)
-      sinatra (>= 0.9.2)
-    ronn (0.7.3)
-      hpricot (>= 0.8.2)
-      mustache (>= 0.7.0)
-      rdiscount (>= 1.5.8)
-    rspec (3.13.0)
-      rspec-core (~> 3.13.0)
-      rspec-expectations (~> 3.13.0)
-      rspec-mocks (~> 3.13.0)
-    rspec-core (3.13.0)
-      rspec-support (~> 3.13.0)
-    rspec-expectations (3.13.0)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.13.0)
-    rspec-mocks (3.13.1)
-      diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.13.0)
-    rspec-support (3.13.1)
-    ruby2_keywords (0.0.5)
-    sinatra (2.2.4)
-      mustermann (~> 2.0)
-      rack (~> 2.2)
-      rack-protection (= 2.2.4)
-      tilt (~> 2.0)
-    sys-uname (1.2.3)
-      ffi (~> 1.1)
-    thor (1.2.2)
-    thread_safe (0.3.6)
-    tilt (2.3.0)
-    tzinfo (1.2.11)
-      thread_safe (~> 0.1)
-
-PLATFORMS
-  x86_64-linux
-
-DEPENDENCIES
-  aruba
-  bundler
-  cucumber
-  mustache
-  resque-pool!
-  ronn
-  rspec
-
-BUNDLED WITH
-   2.3.16
diff --git a/gemfiles/resque_1.22_redis_2.0.gemfile b/gemfiles/resque_1.22_redis_2.0.gemfile
new file mode 100644
index 0000000..0daaf57
--- /dev/null
+++ b/gemfiles/resque_1.22_redis_2.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.22.0"
+gem "redis-namespace", "1.0.3"
+gem "redis", "2.2.2"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.23_redis_2.0.gemfile b/gemfiles/resque_1.23_redis_2.0.gemfile
new file mode 100644
index 0000000..3d7ebd1
--- /dev/null
+++ b/gemfiles/resque_1.23_redis_2.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.23.1"
+gem "redis-namespace", "1.1.0"
+gem "redis", "2.2.2"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.23_redis_3.0.gemfile b/gemfiles/resque_1.23_redis_3.0.gemfile
new file mode 100644
index 0000000..1ed193c
--- /dev/null
+++ b/gemfiles/resque_1.23_redis_3.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.23.1"
+gem "redis-namespace", "1.2.2"
+gem "redis", "3.0.7"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.24_redis_3.0.gemfile b/gemfiles/resque_1.24_redis_3.0.gemfile
new file mode 100644
index 0000000..67af335
--- /dev/null
+++ b/gemfiles/resque_1.24_redis_3.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.24.0"
+gem "redis-namespace", "1.2.2"
+gem "redis", "3.0.7"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.25_redis_3.0.gemfile b/gemfiles/resque_1.25_redis_3.0.gemfile
new file mode 100644
index 0000000..3f1be5a
--- /dev/null
+++ b/gemfiles/resque_1.25_redis_3.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.25.2"
+gem "redis-namespace", "1.4.1"
+gem "redis", "3.0.7"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.26_redis_3.2.gemfile b/gemfiles/resque_1.26_redis_3.2.gemfile
new file mode 100644
index 0000000..957d2bf
--- /dev/null
+++ b/gemfiles/resque_1.26_redis_3.2.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.26.0"
+gem "redis-namespace", "1.5.2"
+gem "redis", "3.2.2"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_1.27_redis_3.3.gemfile b/gemfiles/resque_1.27_redis_3.3.gemfile
new file mode 100644
index 0000000..fad3c2a
--- /dev/null
+++ b/gemfiles/resque_1.27_redis_3.3.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "1.27.4"
+gem "redis-namespace", "1.6.0"
+gem "redis", "3.3.5"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.0_redis_4.0.gemfile b/gemfiles/resque_2.0_redis_4.0.gemfile
new file mode 100644
index 0000000..b35e334
--- /dev/null
+++ b/gemfiles/resque_2.0_redis_4.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.0.0"
+gem "redis-namespace", "1.6.0"
+gem "redis", "4.0.3"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.1_redis_4.4.gemfile b/gemfiles/resque_2.1_redis_4.4.gemfile
new file mode 100644
index 0000000..4425675
--- /dev/null
+++ b/gemfiles/resque_2.1_redis_4.4.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.1.0"
+gem "redis-namespace", "1.7.0"
+gem "redis", "4.4.0"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.2_redis_4.6.gemfile b/gemfiles/resque_2.2_redis_4.6.gemfile
new file mode 100644
index 0000000..3dcafad
--- /dev/null
+++ b/gemfiles/resque_2.2_redis_4.6.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.2.1"
+gem "redis-namespace", "1.8.2"
+gem "redis", "4.6.0"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.3_redis_4.7.gemfile b/gemfiles/resque_2.3_redis_4.7.gemfile
new file mode 100644
index 0000000..51f43e9
--- /dev/null
+++ b/gemfiles/resque_2.3_redis_4.7.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.3.0"
+gem "redis-namespace", "1.9.0"
+gem "redis", "4.7.1"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.4_redis_4.8.gemfile b/gemfiles/resque_2.4_redis_4.8.gemfile
new file mode 100644
index 0000000..a1fc4de
--- /dev/null
+++ b/gemfiles/resque_2.4_redis_4.8.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.4.0"
+gem "redis-namespace", "1.9.0"
+gem "redis", "4.8.1"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.5_redis_5.0.gemfile b/gemfiles/resque_2.5_redis_5.0.gemfile
new file mode 100644
index 0000000..04f56f9
--- /dev/null
+++ b/gemfiles/resque_2.5_redis_5.0.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.5.0"
+gem "redis-namespace", "1.10.0"
+gem "redis", "5.0.8"
+
+gemspec path: "../"
diff --git a/gemfiles/resque_2.6_redis_5.2.gemfile b/gemfiles/resque_2.6_redis_5.2.gemfile
new file mode 100644
index 0000000..64c54f1
--- /dev/null
+++ b/gemfiles/resque_2.6_redis_5.2.gemfile
@@ -0,0 +1,10 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "appraisal"
+gem "resque", "2.6.0"
+gem "redis-namespace", "1.11.0"
+gem "redis", "5.2.0"
+
+gemspec path: "../"