diff --git a/debian/changelog b/debian/changelog
index d4a626b..8c7a8a4 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -6,6 +6,7 @@ patroni (2.0.2-1) UNRELEASED; urgency=medium
   * debian/patches/acceptance_tests_system_patroni.patch: Refreshed.
   * debian/patches/regression_tests_disable_requirement_download.patch:
     Likewise.
+  * debian/control (Build-Depends): Added python3-pysyncobj.
 
  -- Debian PostgreSQL Maintainers <team+postgresql@tracker.debian.org>  Fri, 22 Jan 2021 12:46:05 +0100
 
diff --git a/debian/control b/debian/control
index cc2854f..acb9245 100644
--- a/debian/control
+++ b/debian/control
@@ -29,6 +29,7 @@ Build-Depends:
  python3-psutil,
  python3-psycopg2 (>= 2.6.1),
  python3-pycodestyle,
+ python3-pysyncobj,
  python3-pytest,
  python3-pytest-cov,
  python3-setuptools,