diff --git a/mypy/cache.py b/mypy/cache.py
index ec33152825255..2a095f440e966 100644
--- a/mypy/cache.py
+++ b/mypy/cache.py
@@ -224,7 +224,7 @@ def read(cls, data: ReadBuffer, data_file: str) -> CacheMeta | None:
                 ignore_all=read_bool(data),
                 plugin_data=read_json_value(data),
             )
-        except ValueError:
+        except (ValueError, AssertionError):
             return None