diff --git a/ctfcli/core/instance/config.py b/ctfcli/core/instance/config.py
index a898947..bd6f004 100644
--- a/ctfcli/core/instance/config.py
+++ b/ctfcli/core/instance/config.py
@@ -1,3 +1,5 @@
+from typing import List
+
 from ctfcli.core.api import API
 from ctfcli.core.exceptions import InstanceConfigException
 
@@ -53,7 +55,7 @@ def getall():
         return config
 
     @staticmethod
-    def setall(configs) -> list[str]:
+    def setall(configs) -> List[str]:
         failed = []
         for k, v in configs.items():
             try: