diff --git a/chains-meta.yaml b/chains-meta.yaml
index 2c1836c..128a906 100644
--- a/chains-meta.yaml
+++ b/chains-meta.yaml
@@ -620,6 +620,13 @@
   chain-id: 31611
   explorers:
     - https://explorer.test.mezo.org
+- currency:
+    name: Bitcoin
+    symbol: BTC
+    decimals: 18
+  chain-id: 31612
+  explorers:
+    - https://explorer.mezo.org
 - currency:
     name: ApeCoin
     symbol: APE
diff --git a/chains.yaml b/chains.yaml
index 12ac8a5..f391f3d 100644
--- a/chains.yaml
+++ b/chains.yaml
@@ -2349,6 +2349,12 @@ chain-settings:
           syncing: 10
           lagging: 5
       chains:
+        - id: Mainnet
+          priority: 100
+          code: MEZO_MAINNET
+          grpcId: 10122
+          short-names: [mezo-mainnet]
+          chain-id: 0x7b7c
         - id: Testnet
           priority: 1
           code: MEZO_TESTNET
@@ -2543,4 +2549,4 @@ chain-settings:
           code: OZEAN_POSEIDON_TESTNET
           grpcId: 10135
           short-names: [ ozean-poseidon-testnet ]
-          chain-id: 0x7ca7
\ No newline at end of file
+          chain-id: 0x7ca7