diff --git a/app/services/auth/container_registry_authentication_service.rb b/app/services/auth/container_registry_authentication_service.rb
index 9e7319c1d9b..9c210f3a1f5 100644
--- a/app/services/auth/container_registry_authentication_service.rb
+++ b/app/services/auth/container_registry_authentication_service.rb
@@ -2,7 +2,7 @@
 
 module Auth
   class ContainerRegistryAuthenticationService < BaseService
-    AUDIENCE = 'container_registry'.freeze
+    AUDIENCE = 'container_registry'
 
     def execute(authentication_abilities:)
       @authentication_abilities = authentication_abilities
diff --git a/app/services/auto_merge_service.rb b/app/services/auto_merge_service.rb
index 95bf2db2018..053c6d71fbb 100644
--- a/app/services/auto_merge_service.rb
+++ b/app/services/auto_merge_service.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class AutoMergeService < BaseService
-  STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS = 'merge_when_pipeline_succeeds'.freeze
+  STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS = 'merge_when_pipeline_succeeds'
   STRATEGIES = [STRATEGY_MERGE_WHEN_PIPELINE_SUCCEEDS].freeze
 
   class << self
diff --git a/app/services/merge_requests/rebase_service.rb b/app/services/merge_requests/rebase_service.rb
index 27c16ba1777..4d36dd4feae 100644
--- a/app/services/merge_requests/rebase_service.rb
+++ b/app/services/merge_requests/rebase_service.rb
@@ -2,7 +2,7 @@
 
 module MergeRequests
   class RebaseService < MergeRequests::WorkingCopyBaseService
-    REBASE_ERROR = 'Rebase failed. Please rebase locally'.freeze
+    REBASE_ERROR = 'Rebase failed. Please rebase locally'
 
     def execute(merge_request)
       @merge_request = merge_request
diff --git a/app/services/projects/destroy_service.rb b/app/services/projects/destroy_service.rb
index 5893b8eedff..108c4a79cde 100644
--- a/app/services/projects/destroy_service.rb
+++ b/app/services/projects/destroy_service.rb
@@ -6,7 +6,7 @@ module Projects
 
     DestroyError = Class.new(StandardError)
 
-    DELETED_FLAG = '+deleted'.freeze
+    DELETED_FLAG = '+deleted'
     REPO_REMOVAL_DELAY = 5.minutes.to_i
 
     def async_execute
diff --git a/app/services/projects/lfs_pointers/lfs_download_link_list_service.rb b/app/services/projects/lfs_pointers/lfs_download_link_list_service.rb
index 9b72480d18b..5ef7e03ea02 100644
--- a/app/services/projects/lfs_pointers/lfs_download_link_list_service.rb
+++ b/app/services/projects/lfs_pointers/lfs_download_link_list_service.rb
@@ -5,7 +5,7 @@
 module Projects
   module LfsPointers
     class LfsDownloadLinkListService < BaseService
-      DOWNLOAD_ACTION = 'download'.freeze
+      DOWNLOAD_ACTION = 'download'
 
       DownloadLinksError = Class.new(StandardError)
       DownloadLinkNotFound = Class.new(StandardError)
diff --git a/app/services/projects/lfs_pointers/lfs_list_service.rb b/app/services/projects/lfs_pointers/lfs_list_service.rb
index 22160017f4f..a07fa93a279 100644
--- a/app/services/projects/lfs_pointers/lfs_list_service.rb
+++ b/app/services/projects/lfs_pointers/lfs_list_service.rb
@@ -4,7 +4,7 @@
 module Projects
   module LfsPointers
     class LfsListService < BaseService
-      REV = 'HEAD'.freeze
+      REV = 'HEAD'
 
       # Retrieve all lfs blob pointers and returns a hash
       # with the structure { lfs_file_oid => lfs_file_size }
diff --git a/app/services/projects/lfs_pointers/lfs_object_download_list_service.rb b/app/services/projects/lfs_pointers/lfs_object_download_list_service.rb
index 5ba0f50f2ff..4224b56c42c 100644
--- a/app/services/projects/lfs_pointers/lfs_object_download_list_service.rb
+++ b/app/services/projects/lfs_pointers/lfs_object_download_list_service.rb
@@ -8,9 +8,9 @@ module Projects
     class LfsObjectDownloadListService < BaseService
       include Gitlab::Utils::StrongMemoize
 
-      HEAD_REV = 'HEAD'.freeze
+      HEAD_REV = 'HEAD'
       LFS_ENDPOINT_PATTERN = /^\t?url\s*=\s*(.+)$/.freeze
-      LFS_BATCH_API_ENDPOINT = '/info/lfs/objects/batch'.freeze
+      LFS_BATCH_API_ENDPOINT = '/info/lfs/objects/batch'
 
       LfsObjectDownloadListError = Class.new(StandardError)
 
diff --git a/app/services/projects/open_issues_count_service.rb b/app/services/projects/open_issues_count_service.rb
index ee9884e9042..bc8f7f342f7 100644
--- a/app/services/projects/open_issues_count_service.rb
+++ b/app/services/projects/open_issues_count_service.rb
@@ -7,8 +7,8 @@ module Projects
     include Gitlab::Utils::StrongMemoize
 
     # Cache keys used to store issues count
-    PUBLIC_COUNT_KEY = 'public_open_issues_count'.freeze
-    TOTAL_COUNT_KEY = 'total_open_issues_count'.freeze
+    PUBLIC_COUNT_KEY = 'public_open_issues_count'
+    TOTAL_COUNT_KEY = 'total_open_issues_count'
 
     def initialize(project, user = nil)
       @user = user
diff --git a/app/services/projects/update_pages_service.rb b/app/services/projects/update_pages_service.rb
index 5caeb4cfa5f..fa7a4f0ed82 100644
--- a/app/services/projects/update_pages_service.rb
+++ b/app/services/projects/update_pages_service.rb
@@ -7,11 +7,11 @@ module Projects
 
     BLOCK_SIZE = 32.kilobytes
     MAX_SIZE = 1.terabyte
-    PUBLIC_DIR = 'public'.freeze
+    PUBLIC_DIR = 'public'
 
     # this has to be invalid group name,
     # as it shares the namespace with groups
-    TMP_EXTRACT_PATH = '@pages.tmp'.freeze
+    TMP_EXTRACT_PATH = '@pages.tmp'
 
     attr_reader :build
 
diff --git a/app/services/submit_usage_ping_service.rb b/app/services/submit_usage_ping_service.rb
index 4f10f220298..415a02ab337 100644
--- a/app/services/submit_usage_ping_service.rb
+++ b/app/services/submit_usage_ping_service.rb
@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class SubmitUsagePingService
-  URL = 'https://version.gitlab.com/usage_data'.freeze
+  URL = 'https://version.gitlab.com/usage_data'
 
   METRICS = %w[leader_issues instance_issues percentage_issues leader_notes instance_notes
                percentage_notes leader_milestones instance_milestones percentage_milestones
diff --git a/app/services/wikis/create_attachment_service.rb b/app/services/wikis/create_attachment_service.rb
index df31ad7c8ea..6ef6cbc3c12 100644
--- a/app/services/wikis/create_attachment_service.rb
+++ b/app/services/wikis/create_attachment_service.rb
@@ -2,7 +2,7 @@
 
 module Wikis
   class CreateAttachmentService < Files::CreateService
-    ATTACHMENT_PATH = 'uploads'.freeze
+    ATTACHMENT_PATH = 'uploads'
     MAX_FILENAME_LENGTH = 255
 
     delegate :wiki, to: :project