diff --git a/python-httpbin.spec b/python-httpbin.spec
index 2bda59d..d02748f 100644
--- a/python-httpbin.spec
+++ b/python-httpbin.spec
@@ -42,10 +42,12 @@ BuildRequires:  python-rpm-macros
 Requires:       python-Brotli
 Requires:       python-Flask
 Requires:       python-MarkupSafe
+Requires:       python-Werkzeug >= 0.14.1
 Requires:       python-decorator
 Requires:       python-flasgger
 Requires:       python-gevent
 Requires:       python-itsdangerous
+Requires:       python-raven
 Requires:       python-six
 BuildArch:      noarch
 %python_subpackages