diff --git a/include/tree_sitter/parser.h b/include/tree_sitter/parser.h
index 2f677754..0e772da8 100644
--- a/include/tree_sitter/parser.h
+++ b/include/tree_sitter/parser.h
@@ -6,6 +6,7 @@ extern "C" {
 #endif
 
 #include <stdio.h>
+#include <stdint.h>
 #include "tree_sitter/runtime.h"
 
 typedef struct TSTree TSTree;