diff --git a/contract_manager/store/chains/TonChains.yaml b/contract_manager/store/chains/TonChains.yaml
index 9822aa80f4..bcd83de5e4 100644
--- a/contract_manager/store/chains/TonChains.yaml
+++ b/contract_manager/store/chains/TonChains.yaml
@@ -3,7 +3,7 @@
   mainnet: false
   # using # is a hack so we can later separate the key from the URL and pass
   # it as a header
-  rpcUrl: https://testnet.toncenter.com/api/v2/#$ENV_TON_TESTNET_API_KEY
+  rpcUrl: https://testnet.toncenter.com/api/v2/jsonRPC#$ENV_TON_TESTNET_API_KEY
   type: TonChain
 - id: ton_mainnet
   wormholeChainName: ton_mainnet