diff --git a/monkey/infection_monkey/exploit/zerologon.py b/monkey/infection_monkey/exploit/zerologon.py
index 61449ed50..9c6d863d1 100644
--- a/monkey/infection_monkey/exploit/zerologon.py
+++ b/monkey/infection_monkey/exploit/zerologon.py
@@ -56,7 +56,7 @@ class ZerologonExploiter(HostExploiter):
         T1098_ATTACK_TECHNIQUE_TAG,
         T1210_ATTACK_TECHNIQUE_TAG,
     )
-    _PROPAGATION_TAGS = tuple()
+    _PROPAGATION_TAGS: Tuple[str, ...] = tuple()
 
     MAX_ATTEMPTS = 2000  # For 2000, expected average number of attempts needed: 256.
     ERROR_CODE_ACCESS_DENIED = 0xC0000022