diff --git a/Gemfile b/Gemfile
index 8bae70ed..7c988b91 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,6 +12,7 @@ gem 'aws-sdk-kms', '~> 1.96.0', require: false
 gem 'aws-sdk-s3', '~> 1.177.0', require: false
 gem 'bootsnap', require: false
 gem 'chartkick'
+gem 'connection_pool', '< 3' # Pin to 2.x - version 3.0+ has breaking API changes with Rails RedisCacheStore
 gem 'data_migrate'
 gem 'devise'
 gem 'foreman'
@@ -48,7 +49,7 @@ gem 'rswag-ui'
 gem 'rubyzip', '~> 3.2'
 gem 'sentry-rails', '>= 5.27.0'
 gem 'sentry-ruby'
-gem 'sidekiq', '>= 8.0.5'
+gem 'sidekiq', '8.0.10' # Pin to 8.0.x - sidekiq 8.1+ requires connection_pool 3.0+ which has breaking changes with Rails
 gem 'sidekiq-cron', '>= 2.3.1'
 gem 'sidekiq-limit_fetch'
 gem 'sprockets-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index c51b558d..df7a3517 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -133,7 +133,7 @@ GEM
     chunky_png (1.4.0)
     coderay (1.1.3)
     concurrent-ruby (1.3.6)
-    connection_pool (3.0.2)
+    connection_pool (2.5.5)
     crack (1.0.1)
       bigdecimal
       rexml
@@ -550,12 +550,12 @@ GEM
       concurrent-ruby (~> 1.0, >= 1.0.2)
     shoulda-matchers (6.5.0)
       activesupport (>= 5.2.0)
-    sidekiq (8.1.0)
-      connection_pool (>= 3.0.0)
-      json (>= 2.16.0)
-      logger (>= 1.7.0)
-      rack (>= 3.2.0)
-      redis-client (>= 0.26.0)
+    sidekiq (8.0.10)
+      connection_pool (>= 2.5.0)
+      json (>= 2.9.0)
+      logger (>= 1.6.2)
+      rack (>= 3.1.0)
+      redis-client (>= 0.23.2)
     sidekiq-cron (2.3.1)
       cronex (>= 0.13.0)
       fugit (~> 1.8, >= 1.11.1)
@@ -663,6 +663,7 @@ DEPENDENCIES
   bundler-audit
   capybara
   chartkick
+  connection_pool (< 3)
   data_migrate
   database_consistency (>= 2.0.5)
   debug
@@ -712,7 +713,7 @@ DEPENDENCIES
   sentry-rails (>= 5.27.0)
   sentry-ruby
   shoulda-matchers
-  sidekiq (>= 8.0.5)
+  sidekiq (= 8.0.10)
   sidekiq-cron (>= 2.3.1)
   sidekiq-limit_fetch
   simplecov