diff --git a/docs/conda_env.yml b/docs/conda_env.yml
index 237ab1a69..32398ff59 100644
--- a/docs/conda_env.yml
+++ b/docs/conda_env.yml
@@ -17,8 +17,8 @@ dependencies:
     - sphinx>=5,<8
     - sphinx_rtd_theme>=1.3.0
     - sphinx_copybutton
-    - sb3-contrib>=2.0.0,<3.0
-    - optuna
+    - sb3-contrib>=2.4.0a10,<3.0
+    - optuna>=3.0,<5.0
     - huggingface_sb3>=3.0
     - rich
     - tqdm