diff --git a/substrate/primitives/core/src/crypto.rs b/substrate/primitives/core/src/crypto.rs
index 08e6211e32..5be18422d0 100644
--- a/substrate/primitives/core/src/crypto.rs
+++ b/substrate/primitives/core/src/crypto.rs
@@ -586,6 +586,10 @@ ss58_address_format!(
 		(78, "calamari", "Manta Canary Network, standard account (*25519).")
 	SocialAccount =>
 		(252, "social-network", "Social Network, standard account (*25519).")
+	Moonbeam =>
+		(1284, "moonbeam", "Moonbeam, session key (*25519).")
+	Moonriver =>
+		(1285, "moonriver", "Moonriver, session key (*25519).")
 	BasiliskAccount =>
 		(10041, "basilisk", "Basilisk standard account (*25519).")
 
diff --git a/substrate/ss58-registry.json b/substrate/ss58-registry.json
index 1fa01597f2..9fec4b7be9 100644
--- a/substrate/ss58-registry.json
+++ b/substrate/ss58-registry.json
@@ -514,6 +514,24 @@
 			"standardAccount": "*25519",
 			"website": "https://social.network"
 		},
+		{
+			"prefix": 1284,
+			"network": "moonbeam",
+			"displayName": "Moonbeam",
+			"symbols": ["GLMR"],
+			"decimals": [18],
+			"standardAccount": "*25519",
+			"website": "https://moonbeam.network"
+		},
+		{
+			"prefix": 1285,
+			"network": "moonriver",
+			"displayName": "Moonriver",
+			"symbols": ["MOVR"],
+			"decimals": [18],
+			"standardAccount": "*25519",
+			"website": "https://moonbeam.network"
+		},
 		{
 			"prefix": 10041,
 			"network": "basilisk",