diff --git a/trytond.changes b/trytond.changes
index 2c1a942..4db9ebc 100644
--- a/trytond.changes
+++ b/trytond.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Wed Oct 12 10:39:49 UTC 2022 - Axel Braun <axel.braun@gmx.de>
+
+- dependency on graphviz added
+
 -------------------------------------------------------------------
 Thu Aug 18 09:24:38 UTC 2022 - Axel Braun <axel.braun@gmx.de>
 
diff --git a/trytond.spec b/trytond.spec
index fa3c399..9f1ae1c 100644
--- a/trytond.spec
+++ b/trytond.spec
@@ -45,6 +45,7 @@ BuildRequires:  python3-python-sql >= 0.5
 BuildRequires:  python3-setuptools
 BuildRequires:  python3-wrapt
 
+Requires:       graphviz
 Requires:       html2text
 Requires:       libreoffice-pyuno
 Requires:       python3-Genshi