diff --git a/trytond.spec b/trytond.spec
index 63149c0..e746c27 100644
--- a/trytond.spec
+++ b/trytond.spec
@@ -45,7 +45,7 @@ BuildRequires:  python3-psycopg2
 BuildRequires:  python3-pydot3
 BuildRequires:  python3-python-sql
 BuildRequires:  python3-setuptools
-BuildRequires:  python3-simplejson
+#BuildRequires:  python3-simplejson
 BuildRequires:  python3-wrapt
 BuildRequires:  systemd-rpm-macros
 Requires:       postgresql96-server < 10