diff --git a/.env b/.env
index f20531b..951049c 100644
--- a/.env
+++ b/.env
@@ -2,7 +2,7 @@ VITE_PROJECT_ID = 2719448e2ce94fdd269a3c8587123bcc
 VITE_DEPLOYMENT_MODE = testnet
 VITE_APP_NAME = "Collator Staking - RingDAO"
 VITE_APP_DESCRIPTION = "Elevate your earnings and effortlessly manage your staking positions with the RingDAO collator staking page."
-VITE_KOI_GRAPHQL_API_URL = "https://thegraph.darwinia.network/dip7/subgraphs/name/dip7index-koi"
+VITE_KOI_GRAPHQL_API_URL = "https://thegraph-g2.darwinia.network/training/subgraphs/name/dip7index-koi-kv"
 VITE_CRAB_GRAPHQL_API_URL = "https://thegraph.darwinia.network/dip7/subgraphs/name/dip7index-crab"
 VITE_DARWINIA_GRAPHQL_API_URL = "https://thegraph.darwinia.network/dip7/subgraphs/name/dip7index-darwinia"