diff --git a/packages/networks/src.ts/index.ts b/packages/networks/src.ts/index.ts
index cb1b8e5599..78634e0801 100644
--- a/packages/networks/src.ts/index.ts
+++ b/packages/networks/src.ts/index.ts
@@ -198,7 +198,11 @@ const networks: { [name: string]: Network } = {
         name: "matic",
         _defaultProvider: ethDefaultProvider("matic")
     },
-    maticmum: { chainId: 80001, name: "maticmum" },
+    maticmum: { 
+        chainId: 80001, 
+        name: "maticmum", 
+        _defaultProvider: ethDefaultProvider("maticmum")
+    },
 
     optimism: {
         chainId: 10,
diff --git a/packages/providers/src.ts/ankr-provider.ts b/packages/providers/src.ts/ankr-provider.ts
index 844322f047..aba2bc010c 100644
--- a/packages/providers/src.ts/ankr-provider.ts
+++ b/packages/providers/src.ts/ankr-provider.ts
@@ -26,7 +26,9 @@ function getHost(name: string): string {
 
         case "matic":
             return "rpc.ankr.com/polygon/";
-
+        case "maticmum":
+            return "rpc.ankr.com/polygon_mumbai/";
+            
         case "arbitrum":
             return "rpc.ankr.com/arbitrum/";
     }