diff --git a/.changeset/purple-boats-punch.md b/.changeset/purple-boats-punch.md
new file mode 100644
index 0000000000..817f0a79bc
--- /dev/null
+++ b/.changeset/purple-boats-punch.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-auth-backend': patch
+---
+
+**DEPRECATION**: The `tokenIssuer` option for `OAuthAdapter` is no longer needed and has been deprecated.
diff --git a/plugins/auth-backend/src/lib/oauth/OAuthAdapter.ts b/plugins/auth-backend/src/lib/oauth/OAuthAdapter.ts
index c895b82ede..637dc1cff2 100644
--- a/plugins/auth-backend/src/lib/oauth/OAuthAdapter.ts
+++ b/plugins/auth-backend/src/lib/oauth/OAuthAdapter.ts
@@ -53,7 +53,8 @@ export type Options = {
   cookieDomain: string;
   cookiePath: string;
   appOrigin: string;
-  tokenIssuer: TokenIssuer;
+  /** @deprecated This option is no longer needed */
+  tokenIssuer?: TokenIssuer;
   isOriginAllowed: (origin: string) => boolean;
   callbackUrl: string;
 };