diff --git a/openstack/monasca-common/monasca-common.spec.j2 b/openstack/monasca-common/monasca-common.spec.j2
index 677877166..5876892ae 100644
--- a/openstack/monasca-common/monasca-common.spec.j2
+++ b/openstack/monasca-common/monasca-common.spec.j2
@@ -25,6 +25,7 @@ BuildRequires:  {{ py3('pbr') }}
 BuildRequires:  {{ py3('pyparsing') }}
 BuildRequires:  {{ py3('requests-mock') }}
 BuildRequires:  {{ py3('setuptools') }}
+BuildRequires:  {{ py3('simplejson') }}
 BuildRequires:  {{ py3('six') }}
 BuildRequires:  {{ py3('stestr') }}
 BuildRequires:  {{ py3('ujson') }}
@@ -42,6 +43,7 @@ Requires:       {{ py3('kazoo') }}
 Requires:       {{ py3('oslo.config') }}
 Requires:       {{ py3('oslo.policy') }}
 Requires:       {{ py3('pyparsing') }}
+Requires:       {{ py3('simplejson') }}
 Requires:       {{ py3('six') }}
 Requires:       {{ py3('ujson') }}