diff --git a/electron-builder.yml b/electron-builder.yml
index b4fa3ee..45142f8 100644
--- a/electron-builder.yml
+++ b/electron-builder.yml
@@ -31,12 +31,17 @@ win:
   target:
     - nsis
     - portable
-  artifactName: ${productName}-${version}-${arch}.${ext}
 
+# The nsis installer and the portable build are both .exe — without distinct
+# artifact names they collide on the same file and break release publishing.
 nsis:
   oneClick: false
   perMachine: false
   allowToChangeInstallationDirectory: true
+  artifactName: ${productName}-${version}-setup-${arch}.${ext}
+
+portable:
+  artifactName: ${productName}-${version}-portable-${arch}.${ext}
 
 mac:
   target: