diff --git a/.ci_scripts/environment.yml b/.ci_scripts/environment.yml
index 377280369a..9aed7a15fd 100644
--- a/.ci_scripts/environment.yml
+++ b/.ci_scripts/environment.yml
@@ -4,6 +4,7 @@ channels:
 dependencies:
   - python=3
   - conda-smithy
+  - docutils <0.18
   - sphinx<3
   - cloud_sptheme
   - sphinxcontrib-fulltoc