diff --git a/flipper-dalli.gemspec b/flipper-dalli.gemspec
index 076850425..b4045ea06 100644
--- a/flipper-dalli.gemspec
+++ b/flipper-dalli.gemspec
@@ -21,5 +21,5 @@ Gem::Specification.new do |gem|
   gem.metadata      = Flipper::METADATA
 
   gem.add_dependency 'flipper', "~> #{Flipper::VERSION}"
-  gem.add_dependency 'dalli', '>= 2.0', '< 3'
+  gem.add_dependency 'dalli', '>= 2.0', '< 4'
 end
diff --git a/spec/flipper/adapters/active_support_cache_store_spec.rb b/spec/flipper/adapters/active_support_cache_store_spec.rb
index 5a77f2134..f94a99fcb 100644
--- a/spec/flipper/adapters/active_support_cache_store_spec.rb
+++ b/spec/flipper/adapters/active_support_cache_store_spec.rb
@@ -1,5 +1,4 @@
 require 'active_support/cache'
-require 'active_support/cache/dalli_store'
 require 'flipper/adapters/operation_logger'
 require 'flipper/adapters/active_support_cache_store'
 
diff --git a/spec/flipper/middleware/memoizer_spec.rb b/spec/flipper/middleware/memoizer_spec.rb
index ab7231bca..13d036ba3 100644
--- a/spec/flipper/middleware/memoizer_spec.rb
+++ b/spec/flipper/middleware/memoizer_spec.rb
@@ -1,6 +1,5 @@
 require 'rack/test'
 require 'active_support/cache'
-require 'active_support/cache/dalli_store'
 require 'flipper/adapters/active_support_cache_store'
 require 'flipper/adapters/operation_logger'