diff --git a/libs/adapters/src/blobStorage/util.ts b/libs/adapters/src/blobStorage/util.ts
index d0591bf1337..037743d65e7 100644
--- a/libs/adapters/src/blobStorage/util.ts
+++ b/libs/adapters/src/blobStorage/util.ts
@@ -31,6 +31,7 @@ export async function getSignedUrl_S3sdk(
     }),
     {
       expiresIn: options.ttl,
+      signableHeaders: new Set(['content-type']),
     },
   );
 }
diff --git a/packages/commonwealth/main.ts b/packages/commonwealth/main.ts
index 9161d2afdc2..e6775d61898 100644
--- a/packages/commonwealth/main.ts
+++ b/packages/commonwealth/main.ts
@@ -82,6 +82,7 @@ export async function main(
     saveUninitialized: false,
     cookie: {
       maxAge: config.AUTH.SESSION_EXPIRY_MILLIS,
+      sameSite: 'lax',
     },
   });