diff --git a/docs/environment-docs.yml b/docs/environment-docs.yml
index 7fa4cbce..f0d0d7c6 100644
--- a/docs/environment-docs.yml
+++ b/docs/environment-docs.yml
@@ -16,6 +16,7 @@ dependencies:
   #
   # Extras
   - pooch
+  - timezonefinder
   - typer
   - wrf-python  # for WRF-Chem reader in monetio
   #