diff --git a/pyOpenSSL.spec b/pyOpenSSL.spec
index 662edf62b61864347bf9f2aa08d2b9520dc0bd3c..8fdc103b7c07e766b97f9287bab378f36480b13c 100644
--- a/pyOpenSSL.spec
+++ b/pyOpenSSL.spec
@@ -18,7 +18,7 @@ than calling a corresponding function in the OpenSSL library.
 
 %package -n     python3-%{name}
 Summary:        A rather thin wrapper around (a subset of) the OpenSSL library.
-Requires:       python3-cryptography
+Requires:       python3-six >= 1.5.2 python3-cryptography
 %{?python_provide:%python_provide python3-pyOpenSSL}
 
 %description -n python3-%{name}