diff --git a/dist/setup/index.js b/dist/setup/index.js
index c59bedb4f..3523ed50a 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -54246,7 +54246,7 @@ class BaseDistribution {
         const dataUrl = `${initialUrl}/index.json`;
         const headers = {};
         if (this.nodeInfo.mirrorToken) {
-            headers['Authorization'] = `Bearer ${this.nodeInfo.mirrorToken}`;
+            headers['Authorization'] = this.nodeInfo.mirrorToken;
         }
         const response = await this.httpClient.getJson(dataUrl, headers);
         return response.result || [];
diff --git a/docs/advanced-usage.md b/docs/advanced-usage.md
index 2e02d9c56..4b54ffd54 100644
--- a/docs/advanced-usage.md
+++ b/docs/advanced-usage.md
@@ -470,7 +470,7 @@ Please refer to the [Ensuring workflow access to your package - Configuring a pa
 It is possible to use a private mirror hosting Node.js binaries. This mirror must be a full mirror of the official Node.js distribution.
 The mirror URL can be set using the `mirror` input.
 It is possible to specify a token to authenticate with the mirror using the `mirror-token` input.
-The token will be passed as a bearer token in the `Authorization` header.
+The token will be passed in the `Authorization` header.
 
 ```yaml
 - uses: actions/setup-node@v6
diff --git a/src/distributions/base-distribution.ts b/src/distributions/base-distribution.ts
index 0a99f3a8c..dc9c9d532 100644
--- a/src/distributions/base-distribution.ts
+++ b/src/distributions/base-distribution.ts
@@ -103,7 +103,7 @@ export default abstract class BaseDistribution {
     const headers = {};
 
     if (this.nodeInfo.mirrorToken) {
-      headers['Authorization'] = `Bearer ${this.nodeInfo.mirrorToken}`;
+      headers['Authorization'] = this.nodeInfo.mirrorToken;
     }
 
     const response = await this.httpClient.getJson<INodeVersion[]>(