diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b189fd8..42cdeab 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -8,9 +8,13 @@ jobs:
       fail-fast: false
       matrix:
         ruby: [2.7, 3.0, 3.1, 3.2]
+        gemfile: ["active_support_6", "active_support_7"]
 
     runs-on: ubuntu-latest
 
+    env:
+      BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
+
     steps:
     - uses: actions/checkout@v2
 
@@ -18,5 +22,6 @@ jobs:
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
+        cache-version: ${{ matrix.gemfile }}
 
     - run: bundle exec rspec
diff --git a/gemfiles/active_support_6.gemfile b/gemfiles/active_support_6.gemfile
new file mode 100644
index 0000000..2672433
--- /dev/null
+++ b/gemfiles/active_support_6.gemfile
@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+
+gem 'activesupport', "~> 6.0"
+
+# Specify your gem's dependencies in global_sign.gemspec
+gemspec path: '../'
diff --git a/gemfiles/active_support_7.gemfile b/gemfiles/active_support_7.gemfile
new file mode 100644
index 0000000..0617e04
--- /dev/null
+++ b/gemfiles/active_support_7.gemfile
@@ -0,0 +1,6 @@
+source 'https://rubygems.org'
+
+gem 'activesupport', "~> 7.0"
+
+# Specify your gem's dependencies in global_sign.gemspec
+gemspec path: '../'