diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 37fb20c..6d699e7 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -16,13 +16,16 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["3.2", "3.3", "jruby"]
+        ruby: ["3.2", "3.3", "3.4", "jruby"]
         gemfile:
           - "active_support_7_2"
           - "active_support_8_0"
+          - "active_support_8_1"
         exclude:
           - ruby: "jruby"
             gemfile: "active_support_8_0"
+          - ruby: "jruby"
+            gemfile: "active_support_8_1"
     steps:
       - uses: actions/checkout@v4
       - name: Set up CouchDB
diff --git a/couch_potato.gemspec b/couch_potato.gemspec
index 113b2c8..a6642f9 100644
--- a/couch_potato.gemspec
+++ b/couch_potato.gemspec
@@ -13,7 +13,7 @@ Gem::Specification.new do |s|
   s.version     = CouchPotato::VERSION
   s.platform    = Gem::Platform::RUBY
 
-  s.add_dependency 'activemodel', ['>= 7.2', '< 8.1']
+  s.add_dependency 'activemodel', ['>= 7.2', '< 8.2']
   s.add_dependency 'couchrest', '~>2.0.0'
   s.add_dependency 'json', '~> 2.3'
 
diff --git a/gemfiles/active_support_8_1 b/gemfiles/active_support_8_1
new file mode 100644
index 0000000..176539d
--- /dev/null
+++ b/gemfiles/active_support_8_1
@@ -0,0 +1,7 @@
+source 'https://rubygems.org'
+
+gem 'railties', '~>8.1.2'
+gem 'activemodel'
+gem 'execjs'
+
+gemspec name: 'couch_potato', path: '..'