diff --git a/docs/conda_environment.yml b/docs/conda_environment.yml
index f22bf80040..d13bdc8775 100644
--- a/docs/conda_environment.yml
+++ b/docs/conda_environment.yml
@@ -3,6 +3,7 @@ channels:
   - conda-forge
   - defaults
 dependencies:
+  - packaging=21.3
   - python=3.11
   - bison
   - cmake
diff --git a/docs/docs_requirements.txt b/docs/docs_requirements.txt
index b6639c9680..7a4ea6dd3f 100644
--- a/docs/docs_requirements.txt
+++ b/docs/docs_requirements.txt
@@ -15,3 +15,4 @@ plotly
 nbsphinx
 jinja2
 sphinx-design
+packaging==21.3