diff --git a/package.json b/package.json
index bcb675e1..42496ce7 100644
--- a/package.json
+++ b/package.json
@@ -197,7 +197,7 @@
       ]
     },
     "dmg": {
-      "background": "./resources/bg.png",
+      "background": "./resources/bg.tiff",
       "icon": "resources/icons/icon.ico"
     },
     "mas": {
diff --git a/resources/bg.png b/resources/bg.png
deleted file mode 100644
index b7d46348..00000000
Binary files a/resources/bg.png and /dev/null differ
diff --git a/resources/bg.tiff b/resources/bg.tiff
new file mode 100644
index 00000000..5e51d4f0
Binary files /dev/null and b/resources/bg.tiff differ