diff --git a/src/flask/app.py b/src/flask/app.py
index 652b9bbf71..f85a9d07a1 100644
--- a/src/flask/app.py
+++ b/src/flask/app.py
@@ -1598,7 +1598,7 @@ def wsgi_app(
             except Exception as e:
                 error = e
                 response = self.handle_exception(ctx, e)
-            except:
+            except Exception:
                 error = sys.exc_info()[1]
                 raise
             return response(environ, start_response)