diff --git a/shared/timespec-util.h b/shared/timespec-util.h
index 576b3e8..34a120a 100644
--- a/shared/timespec-util.h
+++ b/shared/timespec-util.h
@@ -28,6 +28,7 @@
 
 #include <stdint.h>
 #include <assert.h>
+#include <time.h>
 
 #define NSEC_PER_SEC 1000000000