diff --git a/docker/rewrite-manifest.py b/docker/rewrite-manifest.py
index 7bb0e956..76a7b305 100644
--- a/docker/rewrite-manifest.py
+++ b/docker/rewrite-manifest.py
@@ -11,4 +11,4 @@
         break
 
 with open("org.flatpak.Builder/org.flatpak.Builder.json", "w") as f:
-    json.dump(manifest, f)
+    json.dump(manifest, f, indent=4)