diff --git a/engine/src/flutter/shell/platform/glfw/glfw_event_loop.h b/engine/src/flutter/shell/platform/glfw/glfw_event_loop.h
index b6bf5849a18..bfdef63b9d3 100644
--- a/engine/src/flutter/shell/platform/glfw/glfw_event_loop.h
+++ b/engine/src/flutter/shell/platform/glfw/glfw_event_loop.h
@@ -7,6 +7,7 @@
 
 #include <chrono>
 #include <deque>
+#include <functional>
 #include <mutex>
 #include <queue>
 #include <thread>
diff --git a/engine/src/flutter/shell/platform/windows/win32_task_runner.h b/engine/src/flutter/shell/platform/windows/win32_task_runner.h
index ce71655e15c..9bc45c33e9a 100644
--- a/engine/src/flutter/shell/platform/windows/win32_task_runner.h
+++ b/engine/src/flutter/shell/platform/windows/win32_task_runner.h
@@ -9,6 +9,7 @@
 
 #include <chrono>
 #include <deque>
+#include <functional>
 #include <mutex>
 #include <queue>
 #include <thread>