diff --git a/packages/publisher/electron-release-server/src/PublisherERS.ts b/packages/publisher/electron-release-server/src/PublisherERS.ts
index 275fae1394..f6ac69fd01 100644
--- a/packages/publisher/electron-release-server/src/PublisherERS.ts
+++ b/packages/publisher/electron-release-server/src/PublisherERS.ts
@@ -131,7 +131,13 @@ export default class PublisherERS extends PublisherBase<PublisherERSConfig> {
             artifactForm.append('token', token);
             artifactForm.append('version', packageJSON.version);
             artifactForm.append('platform', ersPlatform(makeResult.platform, makeResult.arch));
-            artifactForm.append('file', fs.createReadStream(artifactPath));
+
+            // see https://github.com/form-data/form-data/issues/426
+            const fileOptions = {
+              knownLength: fs.statSync(artifactPath).size,
+            };
+            artifactForm.append('file', fs.createReadStream(artifactPath), fileOptions);
+
             await authFetch('api/asset', {
               method: 'POST',
               body: artifactForm,