diff --git a/readme.md b/readme.md
index fab1323f..989e2aab 100644
--- a/readme.md
+++ b/readme.md
@@ -146,7 +146,7 @@ Please read [CONTRIBUTING.md](https://gist.github.com/PurpleBooth/b24679402957c6
 
 ## Versioning
 
-We use [SemVer](http://semver.org/) for versioning. For the versions available, see the [tags on this repository](https://github.com/gnosis/gnosis-team-safe/tags).
+We use [SemVer](https://semver.org/) for versioning. For the versions available, see the [tags on this repository](https://github.com/gnosis/gnosis-team-safe/tags).
 
 ## License