diff --git a/solo-chains/runtime/dancelight/src/bridge_to_ethereum_config.rs b/solo-chains/runtime/dancelight/src/bridge_to_ethereum_config.rs
index 1b8761c8a..20265901a 100644
--- a/solo-chains/runtime/dancelight/src/bridge_to_ethereum_config.rs
+++ b/solo-chains/runtime/dancelight/src/bridge_to_ethereum_config.rs
@@ -104,6 +104,7 @@ parameter_types! {
 }
 
 // Holesky: https://github.com/eth-clients/holesky
+// Fork versions: https://github.com/eth-clients/holesky/blob/main/metadata/config.yaml
 #[cfg(not(any(
     feature = "std",
     feature = "fast-runtime",
@@ -117,19 +118,19 @@ parameter_types! {
             epoch: 0,
         },
         altair: Fork {
-            version: hex_literal::hex!("01017000"), // 0x01017000
+            version: hex_literal::hex!("02017000"), // 0x02017000
             epoch: 0,
         },
         bellatrix: Fork {
-            version: hex_literal::hex!("01017000"), // 0x01017000
+            version: hex_literal::hex!("03017000"), // 0x03017000
             epoch: 0,
         },
         capella: Fork {
-            version: hex_literal::hex!("01017001"), // 0x01017001
+            version: hex_literal::hex!("04017000"), // 0x04017000
             epoch: 256,
         },
         deneb: Fork {
-            version: hex_literal::hex!("01017002"), // 0x01017002
+            version: hex_literal::hex!("05017000"), // 0x05017000
             epoch: 29696,
         },
     };
diff --git a/test/configs/zombie_tanssi_relay_eth_bridge.json b/test/configs/zombie_tanssi_relay_eth_bridge.json
index b7002f240..48c981d53 100644
--- a/test/configs/zombie_tanssi_relay_eth_bridge.json
+++ b/test/configs/zombie_tanssi_relay_eth_bridge.json
@@ -39,6 +39,11 @@
             {
                 "name": "bob",
                 "validator": true
+            },
+            {
+                "name": "charlie",
+                "ws_port": "9948",
+                "validator": true
             }
         ]
     },
diff --git a/test/moonwall.config.json b/test/moonwall.config.json
index c446a77ba..57b30ecf3 100644
--- a/test/moonwall.config.json
+++ b/test/moonwall.config.json
@@ -859,6 +859,11 @@
                     "name": "Tanssi-relay",
                     "type": "polkadotJs",
                     "endpoints": ["ws://127.0.0.1:9947"]
+                },
+                {
+                    "name": "Tanssi-charlie",
+                    "type": "polkadotJs",
+                    "endpoints": ["ws://127.0.0.1:9948"]
                 }
             ]
         },
diff --git a/test/suites/zombie_tanssi_relay_eth_bridge/test_zombie_tanssi_relay_eth_bridge.ts b/test/suites/zombie_tanssi_relay_eth_bridge/test_zombie_tanssi_relay_eth_bridge.ts
index d747d93fd..708218b10 100644
--- a/test/suites/zombie_tanssi_relay_eth_bridge/test_zombie_tanssi_relay_eth_bridge.ts
+++ b/test/suites/zombie_tanssi_relay_eth_bridge/test_zombie_tanssi_relay_eth_bridge.ts
@@ -27,6 +27,7 @@ describeSuite({
     foundationMethods: "zombie",
     testCases: function ({ it, context }) {
         let relayApi: ApiPromise;
+        let relayCharlieApi: ApiPromise;
         let ethereumNodeChildProcess;
         let relayerChildProcess;
         let alice;
@@ -44,6 +45,8 @@ describeSuite({
             const relayNetwork = relayApi.consts.system.version.specName.toString();
             expect(relayNetwork, "Relay API incorrect").to.contain("dancelight");
 
+            relayCharlieApi = context.polkadotJs("Tanssi-charlie");
+
             // //BeaconRelay
             const keyring = new Keyring({ type: "sr25519" });
             alice = keyring.addFromUri("//Alice", { name: "Alice default" });
@@ -51,10 +54,11 @@ describeSuite({
             const executionRelay = keyring.addFromUri("//ExecutionRelay", { name: "Execution relay default" });
 
             // Operator keys
-            operatorAccount = keyring.addFromUri("//" + "Bob", { name: "COLLATOR" + " ACCOUNT" });
-            operatorNimbusKey = keyring.addFromUri("//" + "COLLATOR_NIMBUS", { name: "COLLATOR" + " NIMBUS" });
-
-            await relayApi.tx.session.setKeys(u8aToHex(operatorNimbusKey), []).signAndSend(operatorAccount);
+            operatorAccount = keyring.addFromUri("//Charlie", { name: "Charlie default" });
+            // We rotate the keys for charlie so that we have access to them from this test as well as the node
+            operatorNimbusKey = await relayCharlieApi.rpc.author.rotateKeys();
+            console.log(`operatorNimbusKey: ${operatorNimbusKey}`);
+            await relayApi.tx.session.setKeys(operatorNimbusKey, []).signAndSend(operatorAccount);
 
             const fundingTxHash = await relayApi.tx.utility
                 .batch([
@@ -182,6 +186,9 @@ describeSuite({
 
                 const externalValidatorsBefore = await relayApi.query.externalValidators.externalValidators();
 
+                const sessionValidatorsBefore = await relayApi.query.session.validators();
+                expect(!sessionValidatorsBefore.includes(operatorNimbusKey));
+
                 const rawValidators = [
                     u8aToHex(operatorAccount.addressRaw),
                     "0x7894567890123456789012345678901234567890123456789012345678901234",
@@ -226,6 +233,24 @@ describeSuite({
             },
         });
 
+        it({
+            id: "T04",
+            title: "Operator produces blocks",
+            test: async function () {
+                for (let i = 0; i < 20; ++i) {
+                    const latestBlockHash = await relayApi.rpc.chain.getBlockHash();
+                    const author = (await relayApi.derive.chain.getHeader(latestBlockHash)).author;
+                    if (author == operatorAccount.address) {
+                        return;
+                    }
+
+                    await context.waitBlock(1, "Tanssi-relay");
+                }
+
+                expect.fail("operator didn't produce a block");
+            },
+        });
+
         afterAll(async () => {
             console.log("Cleaning up");
             if (ethereumNodeChildProcess) {