diff --git a/docker/buildmaster/Dockerfile b/docker/buildmaster/Dockerfile
index 8d21245..7be345c 100644
--- a/docker/buildmaster/Dockerfile
+++ b/docker/buildmaster/Dockerfile
@@ -36,6 +36,7 @@ RUN \
 		"buildbot-console-view==$BUILDBOT_VERSION" \
 		"buildbot-grid-view==$BUILDBOT_VERSION" \
 		"buildbot-worker==$BUILDBOT_VERSION" \
+		"twisted==22.10.0" \
 		pyOpenSSL \
 		service_identity
 RUN \