diff --git a/mypy.ini b/mypy.ini
index b2953974ea..a31aff0585 100644
--- a/mypy.ini
+++ b/mypy.ini
@@ -142,7 +142,6 @@ exclude = (?x)
    |tests/util/test_lrucache.py
    |tests/util/test_rwlock.py
    |tests/util/test_wheel_timer.py
-   |tests/utils.py
    )$
 
 [mypy-synapse.api.*]