diff --git a/bin/tests/system/.gitignore b/bin/tests/system/.gitignore
index cff1aa39fd..822e911470 100644
--- a/bin/tests/system/.gitignore
+++ b/bin/tests/system/.gitignore
@@ -1,5 +1,6 @@
 .cache
 .hypothesis
+.mypy_cache
 __pycache__
 dig.out*
 rndc.out*