diff --git a/README.md b/README.md
index 06f7089fc..c2a9f9aa2 100644
--- a/README.md
+++ b/README.md
@@ -37,8 +37,8 @@ You may want `graphnet` to be able to interface with IceTray, e.g., when convert
 
 To achieve this, we recommend running the following commands in a clean bash shell:
 ```bash
-$ eval `/cvmfs/icecube.opensciencegrid.org/py3-v4.1.0/setup.sh`
-$ /cvmfs/icecube.opensciencegrid.org/py3-v4.1.0/RHEL_7_x86_64/metaprojects/combo/stable/env-shell.sh
+$ eval `/cvmfs/icecube.opensciencegrid.org/py3-v4.2.1/setup.sh`
+$ /cvmfs/icecube.opensciencegrid.org/py3-v4.2.1/Ubuntu_20.04_x86_64/metaprojects/icetray/v1.5.1/env-shell.sh
 ```
 Optionally, you can alias these commands or save them as a bash script for convenience, as you will have to run these commands every time you want to use IceTray (with `graphnet`) in a clean shell.