diff --git a/bin/builders/BaseBuilder.ts b/bin/builders/BaseBuilder.ts
index 608e4b7..d19e1bf 100644
--- a/bin/builders/BaseBuilder.ts
+++ b/bin/builders/BaseBuilder.ts
@@ -49,7 +49,7 @@ export default abstract class BaseBuilder {
     const isChina = await isChinaDomain('www.npmjs.com');
     const spinner = getSpinner('Installing package...');
     const rustProjectDir = path.join(tauriSrcPath, '.cargo');
-    const projectConf = path.join(rustProjectDir, 'config');
+    const projectConf = path.join(rustProjectDir, 'config.toml');
     await fsExtra.ensureDir(rustProjectDir);
 
     if (isChina) {
@@ -73,7 +73,7 @@ export default abstract class BaseBuilder {
 
   async start(url: string) {
     await mergeConfig(url, this.options, tauriConfig);
-  } 
+  }
 
   async buildAndCopy(url: string, target: string) {
     const { name } = this.options;
diff --git a/src-tauri/rust_proxy.toml b/src-tauri/rust_proxy.toml
index dbd564d..e5ab562 100644
--- a/src-tauri/rust_proxy.toml
+++ b/src-tauri/rust_proxy.toml
@@ -1,14 +1,10 @@
 [source.crates-io]
-# To use sparse index, change 'rsproxy' to 'rsproxy-sparse'
-replace-with = 'rsproxy'
-
+replace-with = 'rsproxy-sparse'
 [source.rsproxy]
 registry = "https://rsproxy.cn/crates.io-index"
 [source.rsproxy-sparse]
 registry = "sparse+https://rsproxy.cn/index/"
-
 [registries.rsproxy]
 index = "https://rsproxy.cn/crates.io-index"
-
 [net]
 git-fetch-with-cli = true