diff --git a/internal/auth/model.go b/internal/auth/model.go
index 19cea53..f428f62 100644
--- a/internal/auth/model.go
+++ b/internal/auth/model.go
@@ -29,7 +29,7 @@ type SSAFYTokenResponse struct {
 	TokenType             string `json:"token_type"`
 	AccessToken           string `json:"access_token"`
 	Scope                 string `json:"scope"`
-	ExpiresIn             string `json:"expires_in"`
+	ExpiresIn             int    `json:"expires_in"`
 	RefreshToken          string `json:"refresh_token"`
 	RefreshTokenExpiresIn int    `json:"refresh_token_expires_in"`
 }