diff --git a/typescript/infra/config/environments/testnet3/agent.ts b/typescript/infra/config/environments/testnet3/agent.ts
index 3e7c3ee660..bb00fe7d97 100644
--- a/typescript/infra/config/environments/testnet3/agent.ts
+++ b/typescript/infra/config/environments/testnet3/agent.ts
@@ -118,9 +118,6 @@ const hyperlane: RootAgentConfig = {
       [chainMetadata.solanadevnet.name]: {
         tag: '79bad9d-20230706-190752',
       },
-      [chainMetadata.proteustestnet.name]: {
-        tag: 'c7c44b2-20230811-133851',
-      },
     },
     chains: validatorChainConfig(Contexts.Hyperlane),
   },
diff --git a/typescript/infra/config/environments/testnet3/chains.ts b/typescript/infra/config/environments/testnet3/chains.ts
index 0490b0cbfc..c25d3a3953 100644
--- a/typescript/infra/config/environments/testnet3/chains.ts
+++ b/typescript/infra/config/environments/testnet3/chains.ts
@@ -42,11 +42,7 @@ export const ethereumChainNames = Object.keys(
 
 export const environment = 'testnet3';
 
-const validatorChainNames = [
-  ...supportedChainNames,
-  chainMetadata.proteustestnet.name,
-];
-
+const validatorChainNames = supportedChainNames;
 const relayerChainNames = validatorChainNames;
 
 export const agentChainNames: AgentChainNames = {