diff --git a/envs/environment.yaml b/envs/environment.yaml
index 19c96d43..7c5faef3 100644
--- a/envs/environment.yaml
+++ b/envs/environment.yaml
@@ -17,6 +17,7 @@ dependencies:
 
   # Dependencies of the workflow itself
   - xlrd
+  - openpyxl
   - scikit-learn
   - pycountry
   - seaborn