diff --git a/examples/sqlalchemy/app.py b/examples/sqlalchemy/app.py
index 0de86290f..398d1b324 100755
--- a/examples/sqlalchemy/app.py
+++ b/examples/sqlalchemy/app.py
@@ -60,4 +60,7 @@ def shutdown_session(exception=None):
 
 
 if __name__ == '__main__':
-    app.run(port=8080)
+    app.run(
+        port=8080,
+        threaded=False  # in-memory database isn't shared across threads
+    )