diff --git a/bucket/nixpacks.json b/bucket/nixpacks.json
index ef6e04f01e..674e96ce41 100644
--- a/bucket/nixpacks.json
+++ b/bucket/nixpacks.json
@@ -9,13 +9,11 @@
     "architecture": {
         "64bit": {
             "url": "https://github.com/railwayapp/nixpacks/releases/download/v1.4.0/nixpacks-v1.4.0-x86_64-pc-windows-msvc.zip",
-            "hash": "0ccf88db4a6a35d6bd2642c1d236ba9892caa4d31f9daa45856c7a73ad0feb0c",
-            "extract_dir": "nixpacks-v1.4.0-x86_64-pc-windows-msvc"
+            "hash": "0ccf88db4a6a35d6bd2642c1d236ba9892caa4d31f9daa45856c7a73ad0feb0c"
         },
         "32bit": {
             "url": "https://github.com/railwayapp/nixpacks/releases/download/v1.4.0/nixpacks-v1.4.0-i686-pc-windows-msvc.zip",
-            "hash": "cb71e6fd36bea00f17e448d2abbf58f3ed49ad017758fcfd505c788f0c5f3dd1",
-            "extract_dir": "nixpacks-v1.4.0-i686-pc-windows-msvc"
+            "hash": "cb71e6fd36bea00f17e448d2abbf58f3ed49ad017758fcfd505c788f0c5f3dd1"
         }
     },
     "bin": "nixpacks.exe",
@@ -23,13 +21,14 @@
     "autoupdate": {
         "architecture": {
             "64bit": {
-                "url": "https://github.com/railwayapp/nixpacks/releases/download/v$version/nixpacks-v$version-x86_64-pc-windows-msvc.zip",
-                "extract_dir": "nixpacks-v$version-x86_64-pc-windows-msvc"
+                "url": "https://github.com/railwayapp/nixpacks/releases/download/v$version/nixpacks-v$version-x86_64-pc-windows-msvc.zip"
             },
             "32bit": {
-                "url": "https://github.com/railwayapp/nixpacks/releases/download/v$version/nixpacks-v$version-i686-pc-windows-msvc.zip",
-                "extract_dir": "nixpacks-v$version-i686-pc-windows-msvc"
+                "url": "https://github.com/railwayapp/nixpacks/releases/download/v$version/nixpacks-v$version-i686-pc-windows-msvc.zip"
             }
+        },
+        "hash": {
+            "url": "$url.sha256"
         }
     }
 }