diff --git a/_data/chains/eip155-8080.json b/_data/chains/eip155-8080.json
index 804eb68e..0c61239f 100644
--- a/_data/chains/eip155-8080.json
+++ b/_data/chains/eip155-8080.json
@@ -17,7 +17,7 @@
     {
       "name": "Shardeum Scan",
       "url": "https://explorer-liberty10.shardeum.org",
-      "standard": "none"
+      "standard": "EIP3091"
     }
   ],
   "redFlags": ["reusedChainId"]
diff --git a/_data/chains/eip155-8081.json b/_data/chains/eip155-8081.json
index 681cb4e4..f4f1c6ed 100644
--- a/_data/chains/eip155-8081.json
+++ b/_data/chains/eip155-8081.json
@@ -17,7 +17,7 @@
     {
       "name": "Shardeum Scan",
       "url": "https://explorer-liberty20.shardeum.org",
-      "standard": "none"
+      "standard": "EIP3091"
     }
   ],
   "redFlags": ["reusedChainId"]
diff --git a/_data/chains/eip155-8082.json b/_data/chains/eip155-8082.json
index e6e7cb99..0e20c921 100644
--- a/_data/chains/eip155-8082.json
+++ b/_data/chains/eip155-8082.json
@@ -17,7 +17,7 @@
     {
       "name": "Shardeum Scan",
       "url": "https://explorer-sphinx.shardeum.org",
-      "standard": "none"
+      "standard": "EIP3091"
     }
   ],
   "redFlags": ["reusedChainId"]