diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1bb96a6..afd1beb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@ All notable changes to the "crates" extension will be documented in this file.
 - Comma handled for ranged versions [#117](https://github.com/serayuzgur/crates/issues/117)
 - Fix for comments with brackets inside arrays  [#115](https://github.com/serayuzgur/crates/pull/115)
 - ${version} is not being replaced for compatible decorator  [#118](https://github.com/serayuzgur/crates/issues/118)
+- Support alternative local index  [#109](https://github.com/serayuzgur/crates/issues/109)
 
 ## 0.5.5
 
diff --git a/README.md b/README.md
index 0f4fd51..d5aba9a 100644
--- a/README.md
+++ b/README.md
@@ -39,13 +39,15 @@ It is so **simple** that you do not need any configuration, but if you insist...
 
 `crates.useLocalCargoIndex`: If true, crates will use local cargo repository.
 
+`crates.localCargoIndexHash`: he hash path for crates.io index. Default value goes to official index. Alternative values would support registry source mirror with source replacement setup.
+
 `crates.githubAuthBasic`: The `<username>:<personal-access-token>` or `<username>:<password>` for accessing Github API with increased access rates 5000 req/h.
 
-`crates.errorDecorator`: The text to show when a dependency has errors. Default is ❗️.
+`crates.errorDecorator`: The text to show when a dependency has errors. Default is ❗️❗️❗️.
 
-`crates.compatibleDecorator`: The text template to show when a dependency is semver compatible. ${version} will be replaced by the latest version info. Default is '🟢 ${version}'
+`crates.compatibleDecorator`: The text template to show when a dependency is semver compatible. ${version} will be replaced by the latest version info. Default is '✅'
 
-`crates.incompatibleDecorator`: The text template to show when a dependency is not semver compatible. ${version} will be replaced by the latest version info. Default is '🔴 ${version}'
+`crates.incompatibleDecorator`: The text template to show when a dependency is not semver compatible. ${version} will be replaced by the latest version info. Default is '❌ ${version}'
 
 `crates.listPreReleases`: If true, pre-release versions will be listed in hover and at decoration. The default is false.
 
diff --git a/package.json b/package.json
index 85d166d..2c41110 100644
--- a/package.json
+++ b/package.json
@@ -97,6 +97,12 @@
           "scope": "resource",
           "default": true,
           "description": "If true, crates will use local cargo index. (Requires git, cargo and updated crates.io index)"
+        },
+        "crates.localCargoIndexHash": {
+          "type": "string",
+          "scope": "resource",
+          "default": "github.com-1ecc6299db9ec823",
+          "description": "The hash path for crates.io index. Default value goes to official index. Alternative values would support registry source mirror with source replacement setup"
         }
       }
     }
diff --git a/src/api/local_registry.ts b/src/api/local_registry.ts
index 3663b4f..f43af17 100644
--- a/src/api/local_registry.ts
+++ b/src/api/local_registry.ts
@@ -14,7 +14,7 @@ import { decidePath, parseVersions } from "./index-utils";
 const exec = util.promisify(require("child_process").exec);
 
 // check for the crates index. If none found switch to github and show error
-const cargoHome = getCargoPath()
+const cargoHome = getCargoPath();
 
 function getCargoPath() {
   // Trailing slash on macos (does not want / at the end) and windows (needs / at end)
@@ -25,11 +25,14 @@ function getCargoPath() {
 
 
 
-const gitDir = path.resolve(cargoHome, "registry/index/github.com-1ecc6299db9ec823/.git/");
+let gitDir = path.resolve(cargoHome, "registry/index/github.com-1ecc6299db9ec823/.git/");
 
 
 
-export function checkCargoRegistry() {
+export function checkCargoRegistry(localIndexHash?: string) {
+  if (localIndexHash) {
+    gitDir = path.resolve(cargoHome, `registry/index/${localIndexHash}/.git/`);
+  }
   return fs.existsSync(gitDir);
 }
 
diff --git a/src/core/fetcher.ts b/src/core/fetcher.ts
index 740c733..6d923dc 100644
--- a/src/core/fetcher.ts
+++ b/src/core/fetcher.ts
@@ -9,14 +9,16 @@ export function fetchCrateVersions(
   dependencies: Item[],
   shouldListPreRels: boolean,
   githubToken?: string,
-  isLocalRegistry?: boolean): Promise<Dependency[]> {
+  useLocalIndex?: boolean,
+  localIndexHash?: string
+): Promise<Dependency[]> {
   statusBarItem.setText("👀 Fetching crates.io");
+  const isLocalIndexAvailable = useLocalIndex && checkCargoRegistry(localIndexHash);
+  const versions = isLocalIndexAvailable ? loVersions : ghVersions;
+
   const responses = dependencies.map(
     (item: Item): Promise<Dependency> => {
       // Check settings and if local registry enabled control cargo home. Fallback is the github index.
-      const isLocalRegistryAvailable = isLocalRegistry && checkCargoRegistry();
-      const versions = isLocalRegistryAvailable ? loVersions : ghVersions;
-
       return versions(item.key, githubToken)
         .then((json: any) => {
           return {
diff --git a/src/core/listener.ts b/src/core/listener.ts
index 9f95781..611bd9b 100644
--- a/src/core/listener.ts
+++ b/src/core/listener.ts
@@ -26,14 +26,15 @@ function parseAndDecorate(editor: TextEditor) {
   const config = workspace.getConfiguration("", editor.document.uri);
   const shouldListPreRels = config.get("crates.listPreReleases");
   const basicAuth = config.get<string>("crates.githubAuthBasic");
-  const isLocalRegistery = config.get<boolean>("crates.useLocalCargoIndex");
+  const useLocalIndex = config.get<boolean>("crates.useLocalCargoIndex");
+  const localIndexHash = config.get<string>("crates.localCargoIndexHash");
   const githubToken = basicAuth ? `Basic ${Buffer.from(basicAuth).toString("base64")}` : undefined;
   // Handle Promise's catch and normal try/catch the same way with an async closure.
   (async () => {
     try {
       // Parse
       const dependencies = parseToml(text);
-      const fetchedDeps = await fetchCrateVersions(dependencies, !!shouldListPreRels, githubToken, isLocalRegistery);
+      const fetchedDeps = await fetchCrateVersions(dependencies, !!shouldListPreRels, githubToken, useLocalIndex, localIndexHash);
 
       decorate(editor, fetchedDeps);
     } catch (e) {
@@ -46,7 +47,7 @@ function parseAndDecorate(editor: TextEditor) {
   })();
 }
 
-export default function listener (editor: TextEditor | undefined): void {
+export default function listener(editor: TextEditor | undefined): void {
   if (editor) {
     const { fileName } = editor.document;
     if (fileName.toLocaleLowerCase().endsWith("cargo.toml")) {