diff --git a/src/tickchrono.h b/src/tickchrono.h
index 8f7dbd7..6b03844 100644
--- a/src/tickchrono.h
+++ b/src/tickchrono.h
@@ -7,6 +7,7 @@
 // esp-idf includes
 #include <freertos/FreeRTOS.h>
 #include <freertos/projdefs.h>
+#include <freertos/task.h>
 
 namespace espcpputils {