diff --git a/docs/source/environment.yml b/docs/source/environment.yml
index 15a970dc..4ba04635 100644
--- a/docs/source/environment.yml
+++ b/docs/source/environment.yml
@@ -6,9 +6,11 @@ dependencies:
   - pip:
       - mesa~=2.3.0
       - xyzservices>=2022.9.0
+      - sphinx >5.1,<6
       - jupyter_bridge==0.3.5
       - jupyterlite_sphinx~=0.15.0
-      - myst_nb~=1.1.0
+      - myst_nb>=1
       - geopandas==0.14.4
       - jupyterlite~=0.3.0
       - jupyterlite-xeus-python~=1.0.0
+