diff --git a/setup.py b/setup.py
index cbd552c..4635e7b 100755
--- a/setup.py
+++ b/setup.py
@@ -18,6 +18,9 @@
     install_requires=[
         'M2Crypto >= 0.28.2',
     ],
+    extras_require={
+        ':python_version>="3.10"': ['swig'],
+    },
 
     classifiers=[
         'Development Status :: 3 - Alpha',