diff --git a/packages/integration/api-report.md b/packages/integration/api-report.md
index a1a14689ca..8939d24b20 100644
--- a/packages/integration/api-report.md
+++ b/packages/integration/api-report.md
@@ -501,7 +501,7 @@ export type GitlabCredentials = {
 // @public (undocumented)
 export interface GitlabCredentialsProvider {
   // (undocumented)
-  getCredentials(opts?: { url: string }): Promise<GitlabCredentials>;
+  getCredentials(opts: { url: string }): Promise<GitlabCredentials>;
 }
 
 // @public
diff --git a/packages/integration/src/gitlab/SingleInstanceGitlabCredentialsProvider.ts b/packages/integration/src/gitlab/SingleInstanceGitlabCredentialsProvider.ts
index 39f22ab9d5..76068a948e 100644
--- a/packages/integration/src/gitlab/SingleInstanceGitlabCredentialsProvider.ts
+++ b/packages/integration/src/gitlab/SingleInstanceGitlabCredentialsProvider.ts
@@ -28,11 +28,15 @@ export class SingleInstanceGitlabCredentialsProvider
 
   constructor(private readonly token?: string) {}
 
-  async getCredentials(): Promise<GitlabCredentials> {
+  async getCredentials(_opts: { url: string }): Promise<GitlabCredentials> {
+    if (!this.token) {
+      return {};
+    }
+
     return {
-      headers: this.token
-        ? { Authorization: `Bearer ${this.token}` }
-        : undefined,
+      headers: {
+        Authorization: `Bearer ${this.token}`,
+      },
       token: this.token,
     };
   }
diff --git a/packages/integration/src/gitlab/types.ts b/packages/integration/src/gitlab/types.ts
index ef8ccf8d6c..b980aaba7b 100644
--- a/packages/integration/src/gitlab/types.ts
+++ b/packages/integration/src/gitlab/types.ts
@@ -26,5 +26,5 @@ export type GitlabCredentials = {
  * @public
  */
 export interface GitlabCredentialsProvider {
-  getCredentials(opts?: { url: string }): Promise<GitlabCredentials>;
+  getCredentials(opts: { url: string }): Promise<GitlabCredentials>;
 }