diff --git a/backend/app/controllers/sonolus_controller.rb b/backend/app/controllers/sonolus_controller.rb
index 9eabcea..4104d07 100644
--- a/backend/app/controllers/sonolus_controller.rb
+++ b/backend/app/controllers/sonolus_controller.rb
@@ -192,7 +192,7 @@ def authenticate
            }
   end
 
-  after_action { headers["Sonolus-Version"] = "0.7.4" }
+  after_action { headers["Sonolus-Version"] = "0.7.5" }
 
   around_action do |_controller, action|
     success = false