diff --git a/python-ijson/python-ijson.spec b/python-ijson/python-ijson.spec
index 7d0ca49..eba0739 100644
--- a/python-ijson/python-ijson.spec
+++ b/python-ijson/python-ijson.spec
@@ -14,6 +14,8 @@ BuildRequires:  python3-devel
 BuildRequires:  python3dist(setuptools)
 
 BuildRequires:  yajl-devel
+
+BuildRequires:  python3-tox
 BuildRequires:  python3-cffi
 BuildRequires:  python3-pytest-cov