diff --git a/environment.yml b/environment.yml
index bb45fede9100a3b8ca940c50158c7be3db14787a..1388e560df6f75aa2e123ad61a659b0dc53e5464 100644
--- a/environment.yml
+++ b/environment.yml
@@ -71,7 +71,7 @@ dependencies:
     - crowdai-api==0.1.21
     - cycler==0.10.0
     - filelock==3.0.12
-    - flatland-rl==2.1.3
+    - flatland-rl==2.1.5
     - future==0.17.1
     - gym==0.14.0
     - idna==2.8