diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index 253b647acab673712c8cc2a071afa5d8f29e6a66..44b8fa843d64c43c4da2a1e8c413f9a03797056b 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -1,8 +1,3 @@
-*   Add `config.action_dispatch.cookies_digest` option for setting custom
-    digest. The default remains the same - 'SHA1'.
-
-    *Łukasz Strzałkowski*
-
 *   Extract source code for the entire exception stack trace for
     better debugging and diagnosis.
 
diff --git a/actionpack/lib/action_dispatch/middleware/cookies.rb b/actionpack/lib/action_dispatch/middleware/cookies.rb
index 55bb9de17340ab01e81149dbf63ff8479735583e..ac9e5effe28a423cef3dce151d6c5fd6078b95ce 100644
--- a/actionpack/lib/action_dispatch/middleware/cookies.rb
+++ b/actionpack/lib/action_dispatch/middleware/cookies.rb
@@ -90,7 +90,6 @@ class Cookies
     SECRET_TOKEN = "action_dispatch.secret_token".freeze
     SECRET_KEY_BASE = "action_dispatch.secret_key_base".freeze
     COOKIES_SERIALIZER = "action_dispatch.cookies_serializer".freeze
-    COOKIES_DIGEST = "action_dispatch.cookies_digest".freeze
 
     # Cookies can typically store 4096 bytes.
     MAX_COOKIE_SIZE = 4096
@@ -213,8 +212,7 @@ def self.options_for_env(env) #:nodoc:
           secret_token: env[SECRET_TOKEN],
           secret_key_base: env[SECRET_KEY_BASE],
           upgrade_legacy_signed_cookies: env[SECRET_TOKEN].present? && env[SECRET_KEY_BASE].present?,
-          serializer: env[COOKIES_SERIALIZER],
-          digest: env[COOKIES_DIGEST]
+          serializer: env[COOKIES_SERIALIZER]
         }
       end
 
@@ -443,10 +441,6 @@ def serializer
             serializer
           end
         end
-
-        def digest
-          @options[:digest] || 'SHA1'
-        end
     end
 
     class SignedCookieJar #:nodoc:
@@ -457,7 +451,7 @@ def initialize(parent_jar, key_generator, options = {})
         @parent_jar = parent_jar
         @options = options
         secret = key_generator.generate_key(@options[:signed_cookie_salt])
-        @verifier = ActiveSupport::MessageVerifier.new(secret, digest: digest, serializer: NullSerializer)
+        @verifier = ActiveSupport::MessageVerifier.new(secret, serializer: NullSerializer)
       end
 
       def [](name)
diff --git a/actionpack/test/dispatch/cookies_test.rb b/actionpack/test/dispatch/cookies_test.rb
index 744143fc2cb9a49fd4d4307f39c9577af8c7c038..0f145666d150887fba83ec8ebd64ccb5707e0ef7 100644
--- a/actionpack/test/dispatch/cookies_test.rb
+++ b/actionpack/test/dispatch/cookies_test.rb
@@ -369,23 +369,6 @@ def test_read_permanent_cookie
     assert_equal 'Jamie', @controller.send(:cookies).permanent[:user_name]
   end
 
-  def test_signed_cookie_using_default_digest
-    get :set_signed_cookie
-    cookies = @controller.send :cookies
-    assert_not_equal 45, cookies[:user_id]
-    assert_equal 45, cookies.signed[:user_id]
-    assert_equal 'SHA1', cookies.signed.instance_variable_get(:"@verifier").instance_variable_get(:"@digest")
-  end
-
-  def test_signed_cookie_using_custom_digest
-    @request.env["action_dispatch.cookies_digest"] = 'SHA256'
-    get :set_signed_cookie
-    cookies = @controller.send :cookies
-    assert_not_equal 45, cookies[:user_id]
-    assert_equal 45, cookies.signed[:user_id]
-    assert_equal 'SHA256', cookies.signed.instance_variable_get(:"@verifier").instance_variable_get(:"@digest")
-  end
-
   def test_signed_cookie_using_default_serializer
     get :set_signed_cookie
     cookies = @controller.send :cookies
diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index 95693f958b4b3fa2d2583737dcb1641c5a7dddb1..1ccdfb6589e2ccbc57cb3dad4e4fcb46e1d6eccc 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,9 +1,3 @@
-*   The `Rails.application.message_verifier` now returns ActiveSupport::MessageVerifier
-    preconfigured with `:digest` and `:serializer` values set to `config.action_dispatch.cookies_digest`
-    and `config.action_dispatch.cookies_serializer` accordingly.
-
-    *Łukasz Strzałkowski*
-
 *   Add `after_bundle` callbacks in Rails templates. Useful for allowing the
     generated binstubs to be added to version control.
 
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index 16bea413b5cbc31f92ba1c9c8f5b332d4725f9e7..61639be7c6ae96015cb7a368451ad16235e96fd1 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -200,7 +200,7 @@ def key_generator
     def message_verifier(verifier_name)
       @message_verifiers[verifier_name] ||= begin
         secret = key_generator.generate_key(verifier_name.to_s)
-        ActiveSupport::MessageVerifier.new(secret, digest: config.action_dispatch.cookies_digest, serializer: config.action_dispatch.cookies_serializer)
+        ActiveSupport::MessageVerifier.new(secret)
       end
     end
 
@@ -257,7 +257,6 @@ def env_config
           "action_dispatch.encrypted_cookie_salt" => config.action_dispatch.encrypted_cookie_salt,
           "action_dispatch.encrypted_signed_cookie_salt" => config.action_dispatch.encrypted_signed_cookie_salt,
           "action_dispatch.cookies_serializer" => config.action_dispatch.cookies_serializer
-          "action_dispatch.cookies_digest" => config.action_dispatch.cookies_digest
         })
       end
     end