diff --git a/packages/nextcloud-mcp-server/package.nix b/packages/nextcloud-mcp-server/package.nix
index 1da8f76..36092fe 100644
--- a/packages/nextcloud-mcp-server/package.nix
+++ b/packages/nextcloud-mcp-server/package.nix
@@ -25,14 +25,14 @@ let
   pythonvcard4 = fetchWheel {
     pname = "pythonvcard4";
     version = "0.2.0";
-    hash = lib.fakeHash;
+    hash = "sha256-3OMTVd1QruU3+Ig96G8wFRDkB7wXVaaOyNUFW2T1xmA=";
     meta = with lib; { description = "vCard parsing library"; homepage = "https://github.com/GNOME/python-vcard4"; license = licenses.gpl3Plus; };
   };
 
   prometheus-client = fetchWheel {
     pname = "prometheus_client";
     version = "0.25.0";
-    hash = lib.fakeHash;
+    hash = "sha256-1a7InjSabsIwgF0N+ILzgH90/WwaL6hoZOPCJ5BZ/tE=";
     meta = with lib; { description = "Prometheus monitoring system client"; homepage = "https://github.com/prometheus/client_python"; license = licenses.asl20; };
   };
 
@@ -46,7 +46,7 @@ let
   importlib-metadata = fetchWheel {
     pname = "importlib_metadata";
     version = "8.7.1";
-    hash = lib.fakeHash;
+    hash = "sha256-Wh+Avx2qSJSVBx77sJXXWmNM8oqLwplYEkQGO1MXYVE=";
     propagatedBuildInputs = with python3Packages; [ zipp ];
     meta = with lib; { description = "Read metadata from Python packages"; homepage = "https://github.com/python/importlib_metadata"; license = licenses.asl20; };
   };
@@ -94,7 +94,7 @@ let
   x-wr-timezone = fetchWheel {
     pname = "x_wr_timezone";
     version = "2.0.1";
-    hash = lib.fakeHash;
+    hash = "sha256-50pTufT33vgThFXCQOZeR8Ikd4vOPAJPzW2iy+kcoDg=";
     propagatedBuildInputs = with python3Packages; [ icalendar click ];
     meta = with lib; { description = "X-WR-TIMEZONE iCalendar property handling"; homepage = "https://github.com/niccokunzmann/x-wr-timezone"; license = licenses.lgpl3Plus; };
   };
@@ -186,7 +186,7 @@ python3Packages.buildPythonApplication rec {
     owner = "cbcoutinho";
     repo = "nextcloud-mcp-server";
     rev = "v${version}";
-    hash = lib.fakeHash;
+    hash = "sha256-IDTSGsHQ8cCFvgSO7pDbSSHVNV0OIjjoEN9ZfkaPAvk=";
   };
 
   build-system = [ python3Packages.hatchling ];