diff --git a/packages/openauth/src/issuer.ts b/packages/openauth/src/issuer.ts
index 6646ecc6..f0e4d446 100644
--- a/packages/openauth/src/issuer.ts
+++ b/packages/openauth/src/issuer.ts
@@ -931,6 +931,7 @@ export function issuer<
         await Storage.remove(storage, key)
         return c.json({
           access_token: tokens.access,
+          token_type: "Bearer",
           expires_in: tokens.expiresIn,
           refresh_token: tokens.refresh,
         })
@@ -1036,6 +1037,7 @@ export function issuer<
         })
         return c.json({
           access_token: tokens.access,
+          token_type: "Bearer",
           refresh_token: tokens.refresh,
           expires_in: tokens.expiresIn,
         })
diff --git a/packages/openauth/test/issuer.test.ts b/packages/openauth/test/issuer.test.ts
index af1f6c94..aae7cef1 100644
--- a/packages/openauth/test/issuer.test.ts
+++ b/packages/openauth/test/issuer.test.ts
@@ -354,6 +354,7 @@ describe("refresh token", () => {
     const refreshed = await response.json()
     expect(refreshed).toStrictEqual({
       access_token: expectNonEmptyString,
+      token_type: "Bearer",
       refresh_token: expectNonEmptyString,
       expires_in: expect.any(Number),
     })
@@ -383,6 +384,7 @@ describe("refresh token", () => {
     expect(refreshed).toStrictEqual({
       access_token: expectNonEmptyString,
       refresh_token: expectNonEmptyString,
+      token_type: "Bearer",
       expires_in: expect.any(Number),
     })