diff --git a/ansible/roles/stack-sunbird/templates/sunbird_player.env b/ansible/roles/stack-sunbird/templates/sunbird_player.env
index 613d42646976fadaa8f5af527dfaa63c49d7ec29..028e0a9457da77092081ae289ed50ccef41be46c 100644
--- a/ansible/roles/stack-sunbird/templates/sunbird_player.env
+++ b/ansible/roles/stack-sunbird/templates/sunbird_player.env
@@ -168,3 +168,7 @@ sunbird_google_oauth_ios_clientSecret={{sunbird_google_oauth_ios_clientSecret |
 #Release-4.2.0
 #variable for the crypto key to encrypt any content or userinfo that will be used by the external sunbird users
 crypto_encryption_key_external={{crypto_encryption_key_external|default("")}}
+
+#Release-4.3.0
+# default token for device register API fallback
+sunbird_default_device_token={{sunbird_default_device_token | default("")}}