diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0ea845026..14b578d7e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -175,6 +175,9 @@ jobs:
           - rails: "6.1 (default)"
             gemfile: Gemfile
             experimental: false
+          - rails: "7.0"
+            gemfile: gemfiles/rails_7_0.gemfile
+            experimental: true
           - rails: "7.1"
             gemfile: gemfiles/rails_7_1.gemfile
             experimental: true
diff --git a/core/lib/workarea/configuration/sidekiq.rb b/core/lib/workarea/configuration/sidekiq.rb
index 836226721..6137b10b4 100644
--- a/core/lib/workarea/configuration/sidekiq.rb
+++ b/core/lib/workarea/configuration/sidekiq.rb
@@ -91,6 +91,7 @@ def configure_plugins!
           end
         end
 
+        require 'sidekiq/callbacks' unless defined?(::Sidekiq::Callbacks)
         ::Sidekiq::Callbacks.assert_valid_config!
         # sidekiq-throttled 1.x automatically installs its server middleware when
         # `sidekiq/throttled` is required; the old `.setup!` hook was removed.
diff --git a/core/lib/workarea/core/engine.rb b/core/lib/workarea/core/engine.rb
index 1dbe44cee..958fe9412 100644
--- a/core/lib/workarea/core/engine.rb
+++ b/core/lib/workarea/core/engine.rb
@@ -30,7 +30,7 @@ class Engine < ::Rails::Engine
         # doesn't rely on boolean return values from `sadd`, so opt into the
         # Redis 5 behavior now to eliminate deprecation warnings.
         require 'redis'
-        Redis.sadd_returns_boolean = false
+        Redis.sadd_returns_boolean = false if Redis.respond_to?(:sadd_returns_boolean=)
 
         Configuration::Sidekiq.load
         Configuration::CacheStore.load
diff --git a/gemfiles/rails_7_0.gemfile b/gemfiles/rails_7_0.gemfile
new file mode 100644
index 000000000..c2481b4aa
--- /dev/null
+++ b/gemfiles/rails_7_0.gemfile
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+eval_gemfile File.expand_path('../Gemfile', __dir__)
+
+gem 'rails', '7.0.10'