diff --git a/packages/apps-config/src/endpoints/productionRelayKusama.ts b/packages/apps-config/src/endpoints/productionRelayKusama.ts
index 8cf2f3a4e9..468b870474 100644
--- a/packages/apps-config/src/endpoints/productionRelayKusama.ts
+++ b/packages/apps-config/src/endpoints/productionRelayKusama.ts
@@ -501,7 +501,7 @@ export const prodRelayKusama: EndpointOption = {
     Parity: 'wss://kusama-rpc.polkadot.io',
     OnFinality: 'wss://kusama.api.onfinality.io/public-ws',
     Dwellir: 'wss://kusama-rpc.dwellir.com',
-    RadiumBlock: 'wss://kusama.public.curie.radiumblock.co/ws',
+    RadiumBlock: 'wss://kusama.public.curie.radiumblock.xyz/ws',
     Pinknode: 'wss://public-rpc.pinknode.io/kusama',
     // 'Geometry Labs': 'wss://kusama.geometry.io/websockets', // https://github.com/polkadot-js/apps/pull/6746
     'light client': 'light://substrate-connect/kusama'
diff --git a/packages/apps-config/src/endpoints/productionRelayPolkadot.ts b/packages/apps-config/src/endpoints/productionRelayPolkadot.ts
index 1c9cab2325..7f66c6b6c7 100644
--- a/packages/apps-config/src/endpoints/productionRelayPolkadot.ts
+++ b/packages/apps-config/src/endpoints/productionRelayPolkadot.ts
@@ -322,6 +322,7 @@ export const prodRelayPolkadot: EndpointOption = {
     OnFinality: 'wss://polkadot.api.onfinality.io/public-ws',
     Dwellir: 'wss://polkadot-rpc.dwellir.com',
     Pinknode: 'wss://public-rpc.pinknode.io/polkadot',
+    RadiumBlock: 'wss://polkadot.public.curie.radiumblock.io/ws',
     // 'Geometry Labs': 'wss://polkadot.geometry.io/websockets', // https://github.com/polkadot-js/apps/pull/6746
     'light client': 'light://substrate-connect/polkadot'
   },