diff --git a/README.md b/README.md
index 1c9396df..5f67ab71 100644
--- a/README.md
+++ b/README.md
@@ -36,7 +36,7 @@ To get the software follow these steps:
 
 `cd CubeSatSim`
 
-`git checkout master`
+`git checkout bullseye`
 
 You are now ready to install the software using this script in the CubeSatSim directory: