diff --git a/src/public/py_dict.c b/src/public/py_dict.c
index b45678fa..1a64600a 100644
--- a/src/public/py_dict.c
+++ b/src/public/py_dict.c
@@ -5,7 +5,7 @@
 #include "pocketpy/objects/object.h"
 #include "pocketpy/interpreter/vm.h"
 
-#define PK_DICT_MAX_COLLISION 3
+#define PK_DICT_MAX_COLLISION 4
 
 typedef struct {
     py_i64 hash;