diff --git a/python-fasjson-client.spec b/python-fasjson-client.spec
index e88cdcf..016dc4b 100644
--- a/python-fasjson-client.spec
+++ b/python-fasjson-client.spec
@@ -41,6 +41,19 @@ BuildRequires:  (python3dist(pytest-mock) >= 1.10.4 with python3dist(pytest-mock
 BuildRequires:  (python3dist(requests-mock) >= 1.7 with python3dist(requests-mock) < 2)
 %endif
 
+%if 0%{?rhel} && 0%{?rhel} < 9
+# Undefined deps of deps
+# (-> bravado-core, -> swagger-spec-validator) -> jsonschema
+Requires:       python3dist(attr)
+Requires:       python3dist(idna)
+Requires:       python3dist(jsonpointer)
+Requires:       python3dist(pyrsistent)
+Requires:       python3dist(rfc3987)
+Requires:       python3dist(setuptools)
+Requires:       python3dist(six)
+Requires:       python3dist(strict-rfc3339)
+Requires:       python3dist(webcolors)
+%endif
 
 %description
 A python client library for the FASJSON API.
@@ -88,6 +101,9 @@ A command line interface for the FASJSON API.
 
 
 %changelog
+* Thu Dec 03 2020 Nils Philippsen <nils@redhat.com>
+- add missing dependencies of dependencies on EL8
+
 * Wed Dec 02 2020 Nils Philippsen <nils@redhat.com> - 0.1.1-1
 - version 0.1.1
 - provide CLI subpackages (from F-33 on)