diff --git a/modules/rtp_rtcp/source/rtcp_packet/transport_feedback_unittest.cc b/modules/rtp_rtcp/source/rtcp_packet/transport_feedback_unittest.cc
index 356d7a2..92ca464 100644
--- a/modules/rtp_rtcp/source/rtcp_packet/transport_feedback_unittest.cc
+++ b/modules/rtp_rtcp/source/rtcp_packet/transport_feedback_unittest.cc
@@ -14,6 +14,7 @@
 #include <memory>
 #include <utility>
 
+#include "absl/types/optional.h"
 #include "api/array_view.h"
 #include "api/units/time_delta.h"
 #include "api/units/timestamp.h"
diff --git a/rtc_base/task_utils/BUILD.gn b/rtc_base/task_utils/BUILD.gn
index 5fcf25e..c81232c 100644
--- a/rtc_base/task_utils/BUILD.gn
+++ b/rtc_base/task_utils/BUILD.gn
@@ -42,6 +42,9 @@
       "../../system_wrappers:system_wrappers",
       "../../test:test_support",
     ]
-    absl_deps = [ "//third_party/abseil-cpp/absl/functional:any_invocable" ]
+    absl_deps = [
+      "//third_party/abseil-cpp/absl/functional:any_invocable",
+      "//third_party/abseil-cpp/absl/types:optional",
+    ]
   }
 }
diff --git a/rtc_base/task_utils/repeating_task_unittest.cc b/rtc_base/task_utils/repeating_task_unittest.cc
index 2c269b4..de6cfdb 100644
--- a/rtc_base/task_utils/repeating_task_unittest.cc
+++ b/rtc_base/task_utils/repeating_task_unittest.cc
@@ -14,6 +14,7 @@
 #include <memory>
 
 #include "absl/functional/any_invocable.h"
+#include "absl/types/optional.h"
 #include "api/task_queue/task_queue_base.h"
 #include "api/task_queue/test/mock_task_queue_base.h"
 #include "api/units/time_delta.h"