diff --git a/dist/index.js b/dist/index.js
index 4344db7..a45fa28 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -18168,7 +18168,13 @@ class DotnetCoreInstaller {
     }
     getReleasesJsonUrl(httpClient, versionParts) {
         return __awaiter(this, void 0, void 0, function* () {
-            const response = yield httpClient.getJson(DotNetCoreIndexUrl);
+            let response;
+            try {
+                response = yield httpClient.getJson(DotNetCoreIndexUrl);
+            }
+            catch (error) {
+                response = yield httpClient.getJson(DotnetCoreIndexFallbackUrl);
+            }
             const result = response.result || {};
             let releasesInfo = result['releases-index'];
             releasesInfo = releasesInfo.filter((info) => {
@@ -18192,7 +18198,8 @@ class DotnetCoreInstaller {
     }
 }
 exports.DotnetCoreInstaller = DotnetCoreInstaller;
-const DotNetCoreIndexUrl = 'https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/releases-index.json';
+const DotNetCoreIndexUrl = 'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+const DotnetCoreIndexFallbackUrl = 'https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/releases-index.json';
 
 
 /***/ }),
diff --git a/src/installer.ts b/src/installer.ts
index c25d23a..bb08542 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -261,7 +261,12 @@ export class DotnetCoreInstaller {
     httpClient: hc.HttpClient,
     versionParts: string[]
   ): Promise<string> {
-    const response = await httpClient.getJson<any>(DotNetCoreIndexUrl);
+    let response;
+    try {
+      response = await httpClient.getJson<any>(DotNetCoreIndexUrl);
+    } catch (error) {
+      response = await httpClient.getJson<any>(DotnetCoreIndexFallbackUrl);
+    }
     const result = response.result || {};
     let releasesInfo: any[] = result['releases-index'];
 
@@ -300,4 +305,7 @@ export class DotnetCoreInstaller {
 }
 
 const DotNetCoreIndexUrl: string =
+  'https://builds.dotnet.microsoft.com/dotnet/release-metadata/releases-index.json';
+
+const DotnetCoreIndexFallbackUrl: string =
   'https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/releases-index.json';