diff --git a/deltachat-rpc-client/tox.ini b/deltachat-rpc-client/tox.ini
index 7f74daa37..5437e5fce 100644
--- a/deltachat-rpc-client/tox.ini
+++ b/deltachat-rpc-client/tox.ini
@@ -22,7 +22,7 @@ deps =
 skipsdist = True
 skip_install = True
 deps =
-    ruff
+    ruff==0.0.247
     black
 commands =
     black --check --diff src/ examples/ tests/