docs

README.md

@@ -49,8 +49,7 @@ The development is kindly supported by my employer [Variomedia AG](https://www.v
 
 ## *argon2-cffi* for Enterprise
 
-Available as part of the Tidelift Subscription.
+Available as part of the [Tidelift Subscription](https://tidelift.com/?utm_source=lifter&utm_medium=referral&utm_campaign=hynek).
 
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