diff --git a/debian/changelog b/debian/changelog
index ed7c074..67260f6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -2,6 +2,7 @@ patroni (1.6.4-2) UNRELEASED; urgency=medium
 
   [ Michael Banck ]
   * debian/tests/control: Temporarily revert commit c22bd426.
+  * debian/tests/control: Add python3-websocket as regression test requirement.
 
  -- Debian PostgreSQL Maintainers <team+postgresql@tracker.debian.org>  Mon, 10 Feb 2020 10:03:07 +0100
 
diff --git a/debian/tests/control b/debian/tests/control
index 85063bf..ae089fc 100644
--- a/debian/tests/control
+++ b/debian/tests/control
@@ -55,6 +55,7 @@ Depends:
  python3-psycopg2,
  python3-pytest-cov,
  python3-setuptools,
+ python3-websocket,
  @,
 Tests: test
 Restrictions: allow-stderr