diff --git a/python-jwcrypto.spec b/python-jwcrypto.spec
index d1481ca..b07399b 100644
--- a/python-jwcrypto.spec
+++ b/python-jwcrypto.spec
@@ -25,12 +25,12 @@ License:        LGPL-3.0-only
 Group:          Development/Languages/Python
 URL:            https://github.com/latchset/jwcrypto
 Source:         https://files.pythonhosted.org/packages/source/j/jwcrypto/jwcrypto-%{version}.tar.gz
-BuildRequires:  %{python_module cryptography}
+BuildRequires:  %{python_module cryptography >= 2.3}
 BuildRequires:  %{python_module pytest-runner}
 BuildRequires:  %{python_module setuptools}
 BuildRequires:  fdupes
 BuildRequires:  python-rpm-macros
-Requires:       python-cryptography
+Requires:       python-cryptography >= 2.3
 BuildArch:      noarch
 %python_subpackages