diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ Participants will have to submit their code, with packaging specifications, and
 
 - **Anaconda** (By following instructions [here](https://www.anaconda.com/download)) At least version `4.5.11` is required to correctly populate `environment.yml`.
 - **flatland-rl** (By following instructions [here](http://flatland-rl-docs.s3-website.eu-central-1.amazonaws.com/readme.html))
-  **IMPORTANT** : Please note that you will need `flatland-rl` version `>=0.3.9` to be able to submit.
+  **IMPORTANT** : Please note that you will need `flatland-rl` version `>=2.1.1` to be able to submit.
 
 
 ### Setup