diff --git a/Rails.gitignore b/Rails.gitignore
index b2c3f311887e069dead8471b881882abf1d7f769..d8c256c1925e11e94c5b0a56919ec844517a7329 100644
--- a/Rails.gitignore
+++ b/Rails.gitignore
@@ -15,6 +15,9 @@ pickle-email-*.html
 # TODO Comment out these rules if you are OK with secrets being uploaded to the repo
 config/initializers/secret_token.rb
 config/secrets.yml
+
+# dotenv
+# TODO Comment out this rule if environment variables can be committed
 .env
 
 ## Environment normalization: