diff --git a/packages/opencode/src/mcp/oauth-callback.ts b/packages/opencode/src/mcp/oauth-callback.ts
index bb3b56f2e95..c434b21ed3d 100644
--- a/packages/opencode/src/mcp/oauth-callback.ts
+++ b/packages/opencode/src/mcp/oauth-callback.ts
@@ -161,7 +161,7 @@ export namespace McpOAuthCallback {
   export async function isPortInUse(): Promise<boolean> {
     return new Promise((resolve) => {
       Bun.connect({
-        hostname: "127.0.0.1",
+        hostname: "localhost",
         port: OAUTH_CALLBACK_PORT,
         socket: {
           open(socket) {
diff --git a/packages/opencode/src/mcp/oauth-provider.ts b/packages/opencode/src/mcp/oauth-provider.ts
index 35ead25e8be..3661034cc02 100644
--- a/packages/opencode/src/mcp/oauth-provider.ts
+++ b/packages/opencode/src/mcp/oauth-provider.ts
@@ -32,7 +32,7 @@ export class McpOAuthProvider implements OAuthClientProvider {
   ) {}
 
   get redirectUrl(): string {
-    return `http://127.0.0.1:${OAUTH_CALLBACK_PORT}${OAUTH_CALLBACK_PATH}`
+    return `http://localhost:${OAUTH_CALLBACK_PORT}${OAUTH_CALLBACK_PATH}`
   }
 
   get clientMetadata(): OAuthClientMetadata {
diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index 1f0132047a3..9342a3aa3ad 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -24,4 +24,4 @@
     "typescript": "catalog:",
     "@typescript/native-preview": "catalog:"
   }
-}
\ No newline at end of file
+}
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index 9d0a184fa07..33934417672 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -29,4 +29,4 @@
   "publishConfig": {
     "directory": "dist"
   }
-}
\ No newline at end of file
+}