diff --git a/src/mx/tasking/task_stack.h b/src/mx/tasking/task_stack.h
index 18bd413..9dabb52 100644
--- a/src/mx/tasking/task_stack.h
+++ b/src/mx/tasking/task_stack.h
@@ -4,6 +4,7 @@
 #include <array>
 #include <cstddef>
 #include <cstring>
+#include <cstdint>
 #include <mx/system/environment.h>
 #ifdef USE_SSE2
 #include <emmintrin.h>
diff --git a/src/mx/tasking/worker.h b/src/mx/tasking/worker.h
index 7979871..fb25eca 100644
--- a/src/mx/tasking/worker.h
+++ b/src/mx/tasking/worker.h
@@ -7,6 +7,7 @@
 #include "task_stack.h"
 #include <atomic>
 #include <cstddef>
+#include <cstdint>
 #include <memory>
 #include <mx/memory/reclamation/epoch_manager.h>
 #include <mx/util/maybe_atomic.h>