diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1f8c1ae..70eedc3 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -12,5 +12,5 @@ rellu >= 2.0.2
 twine
 wheel
 typing-extensions >= 4.15.0
-approvaltests >= 18.0.5
+approvaltests >= 18.1.0
 mypy == 2.1.0