diff --git a/specs/laos-mercury.raw.json b/specs/laos-mercury.raw.json
index e33396ebc..1e53a9359 100644
--- a/specs/laos-mercury.raw.json
+++ b/specs/laos-mercury.raw.json
@@ -5,7 +5,12 @@
   "bootNodes": [
     "/dns4/laosmercury-boot-0.gorengine.com/tcp/30334/p2p/12D3KooWMfJKXB9JPKctMfZBe7u6HtTcwLPy1J1D4saT1HKisr5S"
   ],
-  "telemetryEndpoints": null,
+  "telemetryEndpoints": [
+    [
+      "/dns/telemetry.polkadot.io/tcp/443/x-parity-wss/%2Fsubmit%2F",
+      0
+    ]
+  ],
   "protocolId": "laos_mercury_testnet",
   "properties": {
     "ss58Format": 42,
diff --git a/specs/laos-sigma.raw.json b/specs/laos-sigma.raw.json
index 9b6b25a42..41913748d 100644
--- a/specs/laos-sigma.raw.json
+++ b/specs/laos-sigma.raw.json
@@ -3,7 +3,12 @@
   "id": "laos_sigma_testnet",
   "chainType": "Live",
   "bootNodes": ["/dns4/laossigma-boot-0.gorengine.com/tcp/30334/p2p/12D3KooWBMM8gJxomycSLjnNnNAVUMEFhBPfBECvT9NvAhPBreRq"],
-  "telemetryEndpoints": null,
+  "telemetryEndpoints": [
+    [
+      "/dns/telemetry.polkadot.io/tcp/443/x-parity-wss/%2Fsubmit%2F",
+      0
+    ]
+  ],
   "protocolId": "laos_sigma_testnet",
   "properties": {
     "ss58Format": 42,