diff --git a/processor/.env.template b/processor/.env.template
index 7cd87f2..77d2b1e 100644
--- a/processor/.env.template
+++ b/processor/.env.template
@@ -12,6 +12,7 @@ MERCHANT_RETURN_URL=[Merchant-website-return-url]
 # Adyen credentials
 ADYEN_ENVIRONMENT=[Adyen-environment]
 ADYEN_API_KEY=[Adyen-api-key]
+ADYEN_CLIENT_KEY=[Adyen-client-key]
 ADYEN_LIVE_URL_PREFIX=
 ADYEN_NOTIFICATION_HMAC_KEY=[Adyen-hmac-key]
 ADYEN_MERCHANT_ACCOUNT=[Adyen-merchant-account]
\ No newline at end of file