diff --git a/Gemfile.lock b/Gemfile.lock
index 8aa2daa6a..6a4a7e08f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -378,7 +378,6 @@ DEPENDENCIES
   kaminari (~> 1.1, >= 1.1.1)
   listen (>= 3.0.5, < 3.2)
   mysql2 (>= 0.4.4, < 0.6.0)
-  newrelic_rpm
   oauth2
   pdfkit
   puma (~> 3.11)
diff --git a/app/views/users/_user.json.jbuilder b/app/views/users/_user.json.jbuilder
index 581072072..4fb05b7ba 100644
--- a/app/views/users/_user.json.jbuilder
+++ b/app/views/users/_user.json.jbuilder
@@ -4,5 +4,5 @@ json.name user.full_name
 json.grade user.grade
 json.identity user&.user_extension&.identity
 # json.email user.mail # 邮箱原则上不暴露的，如果实在需要的话只能对某些具体的接口公开
-json.image_url url_to_avatar(user)
+json.image_url image_tag(url_to_avatar(user))
 json.school user.school_name
\ No newline at end of file