diff --git a/components/brave_ads/content/browser/creatives/search_result_ad/creative_search_result_ad_handler.cc b/components/brave_ads/content/browser/creatives/search_result_ad/creative_search_result_ad_handler.cc
index 2f268163fc78..500e7de3ffa6 100644
--- a/components/brave_ads/content/browser/creatives/search_result_ad/creative_search_result_ad_handler.cc
+++ b/components/brave_ads/content/browser/creatives/search_result_ad/creative_search_result_ad_handler.cc
@@ -5,7 +5,6 @@
 
 #include "brave/components/brave_ads/content/browser/creatives/search_result_ad/creative_search_result_ad_handler.h"
 
-#include <string>
 #include <utility>
 
 #include "base/functional/bind.h"
diff --git a/components/brave_ads/core/internal/common/test/test_base.cc b/components/brave_ads/core/internal/common/test/test_base.cc
index 5af58ef80761..2c2556f9c954 100644
--- a/components/brave_ads/core/internal/common/test/test_base.cc
+++ b/components/brave_ads/core/internal/common/test/test_base.cc
@@ -27,7 +27,6 @@
 #include "brave/components/brave_ads/core/internal/common/test/test_constants.h"
 #include "brave/components/brave_ads/core/internal/common/test/test_types.h"
 #include "brave/components/brave_ads/core/internal/common/test/time_test_util.h"
-#include "brave/components/brave_ads/core/internal/database/database.h"
 #include "brave/components/brave_ads/core/internal/database/database_manager.h"
 #include "brave/components/brave_ads/core/internal/deprecated/client/client_state_manager.h"
 #include "brave/components/brave_ads/core/internal/deprecated/confirmations/confirmation_state_manager.h"
diff --git a/components/brave_ads/core/internal/database/database.cc b/components/brave_ads/core/internal/database/database.cc
index c37433c4df8e..771ce83cbbae 100644
--- a/components/brave_ads/core/internal/database/database.cc
+++ b/components/brave_ads/core/internal/database/database.cc
@@ -14,7 +14,6 @@
 #include "base/debug/dump_without_crashing.h"
 #include "base/files/file_path.h"
 #include "base/functional/bind.h"
-#include "base/location.h"
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
 #include "brave/components/brave_ads/core/internal/common/database/database_column_util.h"
diff --git a/components/brave_ads/core/internal/history/ad_history_manager.h b/components/brave_ads/core/internal/history/ad_history_manager.h
index e2082393c179..f7048052ab2f 100644
--- a/components/brave_ads/core/internal/history/ad_history_manager.h
+++ b/components/brave_ads/core/internal/history/ad_history_manager.h
@@ -6,10 +6,10 @@
 #ifndef BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_HISTORY_AD_HISTORY_MANAGER_H_
 #define BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_HISTORY_AD_HISTORY_MANAGER_H_
 
+#include <optional>
 #include <string>
 
 #include "base/observer_list.h"
-#include "base/types/optional_ref.h"
 #include "brave/components/brave_ads/core/internal/history/ad_history_manager_observer.h"
 #include "brave/components/brave_ads/core/mojom/brave_ads.mojom-forward.h"
 #include "brave/components/brave_ads/core/public/ads_callback.h"
diff --git a/components/brave_ads/core/internal/reminders/reminders.h b/components/brave_ads/core/internal/reminders/reminders.h
index 2de7aa0312a4..98307613cec6 100644
--- a/components/brave_ads/core/internal/reminders/reminders.h
+++ b/components/brave_ads/core/internal/reminders/reminders.h
@@ -6,11 +6,11 @@
 #ifndef BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_REMINDERS_REMINDERS_H_
 #define BRAVE_COMPONENTS_BRAVE_ADS_CORE_INTERNAL_REMINDERS_REMINDERS_H_
 
+#include <optional>
 #include <string>
 
 #include "base/memory/weak_ptr.h"
 #include "base/timer/timer.h"
-#include "base/types/optional_ref.h"
 #include "brave/components/brave_ads/core/internal/history/ad_history_manager_observer.h"
 #include "brave/components/brave_ads/core/public/history/ad_history_item_info.h"