diff --git a/common.cfg b/common.cfg
index ff1cbbd..3488968 100644
--- a/common.cfg
+++ b/common.cfg
@@ -114,6 +114,7 @@ pygments = 2.1.3
 setuptools =
 sphinx-rtd-theme = 0.1.9
 zc.buildout =
+zest.releaser = 6.6.5
 
 
 [zptlint]