diff --git a/scripts/stubtest.sh b/scripts/stubtest.sh
index a4373d220..6281eaa5c 100644
--- a/scripts/stubtest.sh
+++ b/scripts/stubtest.sh
@@ -6,6 +6,9 @@ set -e
 
 export MYPYPATH='.'
 
+# Cleaning existing cache:
+rm -rf .mypy_cache
+
 # TODO: remove `--ignore-positional-only` when ready
 stubtest django \
     --mypy-config-file mypy.ini \