diff --git a/demo/backend/server/app.py b/demo/backend/server/app.py
index 9902f47..424e85b 100644
--- a/demo/backend/server/app.py
+++ b/demo/backend/server/app.py
@@ -128,6 +128,10 @@ app.add_url_rule(
         # https://strawberry.rocks/docs/operations/deployment
         # https://strawberry.rocks/docs/integrations/flask
         allow_queries_via_get=False,
+        # Strawberry recently changed multipart request handling, which now
+        # requires enabling support explicitly for views.
+        # https://github.com/strawberry-graphql/strawberry/issues/3655
+        multipart_uploads_enabled=True,
     ),
 )
 
diff --git a/setup.py b/setup.py
index 54ec575..c67a949 100644
--- a/setup.py
+++ b/setup.py
@@ -47,7 +47,7 @@ EXTRA_PACKAGES = {
         "gunicorn>=23.0.0",
         "imagesize>=1.4.1",
         "pycocotools>=2.0.8",
-        "strawberry-graphql>=0.239.2",
+        "strawberry-graphql>=0.243.0",
     ],
     "dev": [
         "black==24.2.0",