1 files changed, 7 insertions, 0 deletions
diff --git a/pylint/checkers/classes.py b/pylint/checkers/classes.py
index 6870e84c9..18b579e45 100644
--- a/pylint/checkers/classes.py
+++ b/pylint/checkers/classes.py
@@ -1417,6 +1417,13 @@ a metaclass class method.",
         if "__slots__" not in klass.locals or not klass.newstyle:
             return
 
+        # If 'typing.Generic' is a base of bases of klass, the cached version
+        # of 'slots()' might have been evaluated incorrectly, thus deleted cache entry.
+        if any(base.qname() == "typing.Generic" for base in klass.mro()):
+            cache = getattr(klass, "__cache", None)
+            if cache and cache.get(klass.slots) is not None:
+                del cache[klass.slots]
+
         slots = klass.slots()
         if slots is None:
             return