diff --git a/pyproject.toml b/pyproject.toml
index ab164aa75d4d..610fbdc437e7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -151,6 +151,8 @@ confluent-kafka = ">=1.9.2,<3.0.0"
 portalocker = "^2.7.0"
 structlog = "^23.1.0"
 structlog-sentry = "^2.0.2"
+# pin dnspython to avoid dependency incompatibility
+# in order to fix https://rasahq.atlassian.net/browse/ATO-1419
 dnspython = "2.3.0"
 wheel = ">=0.38.1"
 certifi = ">=2023.7.22"