diff --git a/resources/lite_xl_plugin_api.h b/resources/lite_xl_plugin_api.h
index 257791ce..6d68e454 100644
--- a/resources/lite_xl_plugin_api.h
+++ b/resources/lite_xl_plugin_api.h
@@ -28,6 +28,7 @@ Go figure.
 
 #include <stdarg.h>
 #include <stdio.h> // for BUFSIZ? this is kinda weird
+#include <stdlib.h>
 
 #define SYMBOL_WRAP_DECL(ret, name, ...) \
   ret name(__VA_ARGS__)