diff --git a/Changelog.md b/Changelog.md
index c6b6815187c682baebf4b883c3f1ee75631dc720..60c9f4cbd6ded2aa9535fb68b5b23756c4301152 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -2,6 +2,9 @@
 
 All notable changes to this project will be documented in this file.
 
+## [0.51] - 2020-08-20
+- POL1-137: add remaining service categories and test vectors
+
 ## [0.50] - 2020-08-14
 - performance improvment for /poller/services