diff --git a/_data/chains.json b/_data/chains.json
index c1b1c1a0..f2b037dd 100644
--- a/_data/chains.json
+++ b/_data/chains.json
@@ -182,5 +182,21 @@
     "network": "mainnet",
     "chain_id": 2018,
     "network_id": 1
+  },
+  {
+    "name": "ARTIS sigma1",
+    "short_name": "ats",
+    "chain": "ARTIS",
+    "network": "sigma1",
+    "chain_id": 246529,
+    "network_id": 246529
+  },
+  {
+    "name": "ARTIS tau1",
+    "short_name": "ats",
+    "chain": "ARTIS",
+    "network": "tau1",
+    "chain_id": 246785,
+    "network_id": 246785
   }
 ]