diff --git a/README.md b/README.md
index af0c9113..ccecea61 100644
--- a/README.md
+++ b/README.md
@@ -402,7 +402,8 @@ EMAIL_SERVERS_WITH_PRIORITY=[(10, "app.mydomain.com.")]
 # this option doesn't make sense in self-hosted. Set this variable to disable this option.
 DISABLE_ALIAS_SUFFIX=1
 
-# the DKIM private key used to compute DKIM-Signature
+# the DKIM public/private keys used to compute DKIM-Signature
+DKIM_PUBLIC_KEY_PATH=/dkim.pub.key
 DKIM_PRIVATE_KEY_PATH=/dkim.key
 
 # DB Connection
diff --git a/example.env b/example.env
index a590709c..66c65ca4 100644
--- a/example.env
+++ b/example.env
@@ -69,7 +69,8 @@ EMAIL_SERVERS_WITH_PRIORITY=[(10, "email.hostname.")]
 # By default, emails are sent using the the same Postfix server that receives emails
 # POSTFIX_SERVER=my-postfix.com
 
-# the DKIM private key used to compute DKIM-Signature
+# the DKIM public/private keys used to compute DKIM-Signature
+# DKIM_PUBLIC_KEY_PATH=local_data/dkim.pub.key
 # DKIM_PRIVATE_KEY_PATH=local_data/dkim.key
 
 # delete and recreate the sqlite database, for local development