diff --git a/README.md b/README.md
index de14959..eaab2cf 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ An MCP (Model Context Protocol) server that provides local access to Aztec docum
 
 ## Features
 
-- **Version Support**: Clone specific Aztec release tags (e.g., `v4.0.0-devnet.2-patch.1`)
+- **Version Support**: Clone specific Aztec release tags (e.g., `v4.2.0-aztecnr-rc.2`)
 - **Local Repository Cloning**: Automatically clones Aztec repositories with sparse checkout for efficiency
 - **Fast Code Search**: Search Noir contracts and TypeScript files using ripgrep (with fallback)
 - **Documentation Search**: Search Aztec documentation by section
@@ -57,14 +57,14 @@ Clones:
 
 **Parameters:**
 
-- `version` (string): Aztec version tag to clone (e.g., `v4.0.0-devnet.2-patch.1`). Defaults to latest supported version.
+- `version` (string): Aztec version tag to clone (e.g., `v4.2.0-aztecnr-rc.2`). Defaults to latest supported version.
 - `force` (boolean): Force re-clone even if repos exist
 - `repos` (string[]): Specific repos to sync
 
 **Example - Clone specific version:**
 
 ```
-aztec_sync_repos({ version: "v4.0.0-devnet.2-patch.1" })
+aztec_sync_repos({ version: "v4.2.0-aztecnr-rc.2" })
 ```
 
 ### `aztec_status`
diff --git a/src/index.ts b/src/index.ts
index a825ff2..f7553b9 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -69,7 +69,7 @@ server.setRequestHandler(ListToolsRequestSchema, async () => ({
           version: {
             type: "string",
             description:
-              "Aztec version tag to clone (e.g., 'v4.0.0-devnet.2-patch.1'). Defaults to latest supported version.",
+              "Aztec version tag to clone (e.g., 'v4.2.0-aztecnr-rc.2'). Defaults to latest supported version.",
           },
           force: {
             type: "boolean",
diff --git a/src/repos/config.ts b/src/repos/config.ts
index f65fc0f..0801ced 100644
--- a/src/repos/config.ts
+++ b/src/repos/config.ts
@@ -29,7 +29,7 @@ export interface RepoConfig {
 }
 
 /** Default Aztec version (tag) to use - can be overridden via AZTEC_DEFAULT_VERSION env var */
-export const DEFAULT_AZTEC_VERSION = process.env.AZTEC_DEFAULT_VERSION || "v4.0.0-devnet.2-patch.1";
+export const DEFAULT_AZTEC_VERSION = process.env.AZTEC_DEFAULT_VERSION || "v4.2.0-aztecnr-rc.2";
 
 /**
  * Base Aztec repository configurations (without version)
@@ -131,7 +131,7 @@ const BASE_REPOS: Omit<RepoConfig, "tag">[] = [
 
 /**
  * Get Aztec repositories configured for a specific version
- * @param version - The Aztec version tag (e.g., "v4.0.0-devnet.2-patch.1")
+ * @param version - The Aztec version tag (e.g., "v4.2.0-aztecnr-rc.2")
  */
 export function getAztecRepos(version?: string): RepoConfig[] {
   const tag = version || DEFAULT_AZTEC_VERSION;
diff --git a/test.mjs b/test.mjs
index b599569..f577f19 100644
--- a/test.mjs
+++ b/test.mjs
@@ -23,7 +23,7 @@ async function test() {
   // Test 2: Sync repos (this will take a while)
   console.log("2. Syncing repositories (this may take a few minutes)...");
   const syncResult = await syncRepos({
-    version: "v4.0.0-devnet.2-patch.1",
+    version: "v4.2.0-aztecnr-rc.2",
     force: true  // Force re-clone to get all repos at the tag
   });
   console.log(`   Success: ${syncResult.success}`);