diff --git a/debian/changelog b/debian/changelog
index 6a2203ead..647da809a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+taler-exchange (0.9.0-21) unstable; urgency=low
+
+  * Fix service start assertion.
+
+ -- Florian Dold <dold@taler.net>  Wed, 04 Aug 2021 18:54:54 +0200
+
 taler-exchange (0.9.0-20) unstable; urgency=low
 
   * Reduce service dependencies of taler-exchange-httpd.service.