diff --git a/environment.yml b/environment.yml
index ec31f08c..75423f8e 100644
--- a/environment.yml
+++ b/environment.yml
@@ -32,7 +32,7 @@ dependencies:
     - xgboost
     - graphviz
     - bokeh
-    # - nltk
+    - nltk
     - pandas-datareader
     - seaborn
     - patsy