diff --git a/idp/casdoor.go b/idp/casdoor.go
index 9ec5d093..8d91b32a 100644
--- a/idp/casdoor.go
+++ b/idp/casdoor.go
@@ -131,6 +131,7 @@ func (idp *CasdoorIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	data, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
diff --git a/idp/custom.go b/idp/custom.go
index 7f40cda8..f523fa74 100644
--- a/idp/custom.go
+++ b/idp/custom.go
@@ -82,6 +82,7 @@ func (idp *CustomIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error)
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	data, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
diff --git a/idp/dingtalk.go b/idp/dingtalk.go
index c4a553fc..ff663cd6 100644
--- a/idp/dingtalk.go
+++ b/idp/dingtalk.go
@@ -143,6 +143,7 @@ func (idp *DingTalkIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, erro
 	if err != nil {
 		return nil, err
 	}
+	defer resp.Body.Close()
 
 	data, err := ioutil.ReadAll(resp.Body)
 	if err != nil {