diff --git a/spec/fixtures/images/pngquant.png b/spec/fixtures/images/pngquant.png
index 2ffb274f20a..5996ba50306 100644
Binary files a/spec/fixtures/images/pngquant.png and b/spec/fixtures/images/pngquant.png differ
diff --git a/spec/lib/upload_creator_spec.rb b/spec/lib/upload_creator_spec.rb
index f1204358213..cdeef0fce9e 100644
--- a/spec/lib/upload_creator_spec.rb
+++ b/spec/lib/upload_creator_spec.rb
@@ -139,7 +139,7 @@ RSpec.describe UploadCreator do
         ).create_for(user.id)
 
         # no optimisation possible without losing details
-        expect(upload.filesize).to eq(9558)
+        expect(upload.filesize).to eq(9202)
 
         thumbnail_size = upload.get_optimized_image(upload.width, upload.height, {}).filesize