diff --git a/overlays/nextcloud-apps.nix b/overlays/nextcloud-apps.nix
index 5604a25..6be7d10 100644
--- a/overlays/nextcloud-apps.nix
+++ b/overlays/nextcloud-apps.nix
@@ -3,15 +3,15 @@ inputs: _final: prev: {
   nextcloudApps = {
     news = prev.fetchNextcloudApp {
       url = inputs.nextcloud-news.outPath;
-      sha256 = inputs.nextcloud-news.sha256;
+      sha256 = inputs.nextcloud-news.narHash;
     };
     external = prev.fetchNextcloudApp {
       url = inputs.nextcloud-external.outPath;
-      sha256 = inputs.nextcloud-external.sha256;
+      sha256 = inputs.nextcloud-external.narHash;
     };
     cookbook = prev.fetchNextcloudApp {
       url = inputs.nextcloud-cookbook.outPath;
-      sha256 = inputs.nextcloud-cookbook.sha256;
+      sha256 = inputs.nextcloud-cookbook.narHash;
     };
   };