diff --git a/requirements-freqai-rl.txt b/requirements-freqai-rl.txt
index e29df34ac..b6bd7ef15 100644
--- a/requirements-freqai-rl.txt
+++ b/requirements-freqai-rl.txt
@@ -4,5 +4,5 @@
 # Required for freqai-rl
 torch==1.12.1
 stable-baselines3==1.6.1
-gym==0.26.2
+gym==0.21
 sb3-contrib==1.6.1