diff --git a/README.md b/README.md
index ab6b348..c20b996 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 <p align="center"> <img src="misc/satrs-logo.png" width="40%"> </p>
 
-[![sat-rs website](https://img.shields.io/badge/sat--rs-website-green?style=flat)](https://absatsw.irs.uni-stuttgart.de/projects/sat-rs/)
-[![sat-rs book](https://img.shields.io/badge/sat--rs-book-green?style=flat)](https://absatsw.irs.uni-stuttgart.de/projects/sat-rs/book/)
+[![sat-rs website](https://img.shields.io/badge/sat--rs-website-darkgreen?style=flat)](https://absatsw.irs.uni-stuttgart.de/projects/sat-rs/)
+[![sat-rs book](https://img.shields.io/badge/sat--rs-book-darkgreen?style=flat)](https://absatsw.irs.uni-stuttgart.de/projects/sat-rs/book/)
 [![Crates.io](https://img.shields.io/crates/v/satrs)](https://crates.io/crates/satrs)
 [![docs.rs](https://img.shields.io/docsrs/satrs)](https://docs.rs/satrs)