diff --git a/src/lib/version.c b/src/lib/version.c
index 256f6f5..db762fe 100644
--- a/src/lib/version.c
+++ b/src/lib/version.c
@@ -1,4 +1,5 @@
 #include <stddef.h>
+#include <assert.h>
 
 #include "version.h"
 #include "parser.h"