diff --git a/packages/nextcloud-mcp-server/package.nix b/packages/nextcloud-mcp-server/package.nix
index 3526b28..7be2008 100644
--- a/packages/nextcloud-mcp-server/package.nix
+++ b/packages/nextcloud-mcp-server/package.nix
@@ -11,7 +11,7 @@ let
     owner = "open-telemetry";
     repo = "opentelemetry-python";
     rev = "v1.39.1";
-    hash = lib.fakeHash;
+    hash = "sha256-GEcGADUdci6W2vfeXt/rjQOL/7r4RBxgyq+vy6tivBc=";
   };
 
   # ── OpenTelemetry Contrib monorepo (instrumentation-*, util-http) ──
@@ -19,7 +19,7 @@ let
     owner = "open-telemetry";
     repo = "opentelemetry-python-contrib";
     rev = "v0.60b1";
-    hash = lib.fakeHash;
+    hash = "sha256-IDTSGsHQ8cCFvgSO7pDbSSHVNV0OIjjoEN9ZfkaPAvk=";
   };
 
   # ── Tier 1: leaf packages ──
@@ -53,7 +53,7 @@ let
       owner = "nhairs";
       repo = "python-json-logger";
       rev = "v${version}";
-      hash = lib.fakeHash;
+      hash = "sha256-hJ29rDP04apLf1zaP1vQrYF5xm4GtKZlvno97b7g+hg=";
     };
     doCheck = false;
     meta = with lib; { description = "JSON formatter for python logging"; homepage = "https://github.com/nhairs/python-json-logger"; license = licenses.bsd2; };
@@ -198,7 +198,7 @@ let
       owner = "niccokunzmann";
       repo = "python-recurring-ical-events";
       rev = "v${version}";
-      hash = lib.fakeHash;
+      hash = "sha256-/xTv/JovC8IVZz14ygnEL5vg/W8xR4Ie78hTi+gG58M=";
     };
     propagatedBuildInputs = [ x-wr-timezone ] ++ (with python3Packages; [ icalendar python-dateutil ]);
     doCheck = false;
@@ -226,7 +226,7 @@ let
       owner = "qdrant";
       repo = "qdrant-client";
       rev = "v${version}";
-      hash = lib.fakeHash;
+      hash = "sha256-ZBP1D67u+KZmBi614nuToauI+xhdH1PKD3g6xRfFQxk=";
     };
     propagatedBuildInputs = with python3Packages; [ grpcio httpx numpy portalocker protobuf pydantic urllib3 ];
     doCheck = false;
@@ -280,7 +280,7 @@ let
       owner = "langchain-ai";
       repo = "langchain";
       rev = "langchain-text-splitters==${version}";
-      hash = lib.fakeHash;
+      hash = "sha256-AiRl8N2V2UfYLZfqxM8DHZmT76rH19I1gFyOYc/mpYY=";
     };
     sourceRoot = "${src.name}/libs/text-splitters";
     propagatedBuildInputs = with python3Packages; [ langchain-core ];