diff --git a/pkgs/by-name/nc/ncps/package.nix b/pkgs/by-name/nc/ncps/package.nix
index 3b4ca8918f1f..99734c0b3bb3 100644
--- a/pkgs/by-name/nc/ncps/package.nix
+++ b/pkgs/by-name/nc/ncps/package.nix
@@ -13,97 +13,111 @@
   python3,
   redis,
   writeShellScriptBin,
+  nixosTests,
+  nix-update-script,
 }:
 
 let
   dbmate-real = writeShellScriptBin "dbmate.real" ''
     exec ${dbmate}/bin/dbmate "$@"
   '';
-
-  dbmate-wrapper = buildGoModule {
-    pname = "ncps-dbmate-wrapper";
-    inherit (finalAttrs) version;
-
-    src = "${finalAttrs.src}/nix/dbmate-wrapper/src";
-
-    vendorHash = null;
-
-    subPackages = [ "." ];
-  };
-
-  finalAttrs = {
-    pname = "ncps";
-    version = "0.8.4";
-
-    src = fetchFromGitHub {
-      owner = "kalbasit";
-      repo = "ncps";
-      tag = "v${finalAttrs.version}";
-      hash = "sha256-GJnWVhn8SZY5IJbBSuq1j8qV06/kdHhcVu6QhnTsk0Y=";
-    };
-
-    vendorHash = "sha256-AcgC+zTS3eVsbcs0jim4zDBGc3lIjwPbdVT7/KQ9Lkc=";
-
-    ldflags = [
-      "-X github.com/kalbasit/ncps/pkg/ncps.Version=v${finalAttrs.version}"
-    ];
-
-    subPackages = [ "." ];
-
-    nativeBuildInputs = [
-      curl # used for checking MinIO health check
-      dbmate # used for testing
-      jq # used for testing by the init-minio
-      mariadb # MySQL/MariaDB for integration tests
-      minio # S3-compatible storage for integration tests
-      minio-client # mc CLI for MinIO setup
-      postgresql # PostgreSQL for integration tests
-      python3 # used for generating the ports
-      redis # Redis for distributed locking integration tests
-      makeWrapper # For wrapping dbmate.
-    ];
-
-    postInstall = ''
-      mkdir -p $out/share/ncps
-      cp -r db $out/share/ncps/db
-
-      makeWrapper ${dbmate-wrapper}/bin/dbmate-wrapper \
-        $out/bin/dbmate-ncps \
-        --prefix PATH : ${dbmate-real}/bin \
-        --set NCPS_DB_MIGRATIONS_DIR $out/share/ncps/db/migrations
-    '';
-
-    doCheck = true;
-
-    checkFlags = [ "-race" ];
-
-    # pre and post checks
-    preCheck = ''
-      # Set up cleanup trap to ensure background processes are killed even if tests fail
-      cleanup() {
-        source $src/nix/packages/ncps/post-check-minio.sh
-        source $src/nix/packages/ncps/post-check-mysql.sh
-        source $src/nix/packages/ncps/post-check-postgres.sh
-        source $src/nix/packages/ncps/post-check-redis.sh
-      }
-      trap cleanup EXIT
-
-      source $src/nix/packages/ncps/pre-check-minio.sh
-      source $src/nix/packages/ncps/pre-check-mysql.sh
-      source $src/nix/packages/ncps/pre-check-postgres.sh
-      source $src/nix/packages/ncps/pre-check-redis.sh
-    '';
-
-    meta = {
-      description = "Nix binary cache proxy service";
-      homepage = "https://github.com/kalbasit/ncps";
-      license = lib.licenses.mit;
-      mainProgram = "ncps";
-      maintainers = with lib.maintainers; [
-        kalbasit
-        aciceri
-      ];
-    };
-  };
 in
-buildGoModule finalAttrs
+buildGoModule (finalAttrs: {
+  pname = "ncps";
+  version = "0.8.5";
+
+  src = fetchFromGitHub {
+    owner = "kalbasit";
+    repo = "ncps";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-0kQ2DTnBil7eSP/eSwLVqw/UyIwBMFtmKAeLCi64Fr8=";
+  };
+
+  vendorHash = "sha256-AcgC+zTS3eVsbcs0jim4zDBGc3lIjwPbdVT7/KQ9Lkc=";
+
+  ldflags = [
+    "-X github.com/kalbasit/ncps/pkg/ncps.Version=v${finalAttrs.version}"
+  ];
+
+  subPackages = [ "." ];
+
+  nativeBuildInputs = [
+    curl # used for checking MinIO health check
+    dbmate # used for testing
+    jq # used for testing by the init-minio
+    mariadb # MySQL/MariaDB for integration tests
+    minio # S3-compatible storage for integration tests
+    minio-client # mc CLI for MinIO setup
+    postgresql # PostgreSQL for integration tests
+    python3 # used for generating the ports
+    redis # Redis for distributed locking integration tests
+    makeWrapper # For wrapping dbmate.
+  ];
+
+  postInstall = ''
+    mkdir -p $out/share/ncps
+    cp -r db $out/share/ncps/db
+
+    makeWrapper ${finalAttrs.passthru.dbmate-wrapper}/bin/dbmate-wrapper \
+      $out/bin/dbmate-ncps \
+      --prefix PATH : ${dbmate-real}/bin \
+      --set NCPS_DB_MIGRATIONS_DIR $out/share/ncps/db/migrations
+  '';
+
+  doCheck = true;
+
+  checkFlags = [ "-race" ];
+
+  # pre and post checks
+  preCheck = ''
+    # Set up cleanup trap to ensure background processes are killed even if tests fail
+    cleanup() {
+      source $src/nix/packages/ncps/post-check-minio.sh
+      source $src/nix/packages/ncps/post-check-mysql.sh
+      source $src/nix/packages/ncps/post-check-postgres.sh
+      source $src/nix/packages/ncps/post-check-redis.sh
+    }
+    trap cleanup EXIT
+
+    source $src/nix/packages/ncps/pre-check-minio.sh
+    source $src/nix/packages/ncps/pre-check-mysql.sh
+    source $src/nix/packages/ncps/pre-check-postgres.sh
+    source $src/nix/packages/ncps/pre-check-redis.sh
+  '';
+
+  passthru = {
+    dbmate-wrapper = buildGoModule {
+      pname = "ncps-dbmate-wrapper";
+      inherit (finalAttrs) version;
+
+      src = "${finalAttrs.src}/nix/dbmate-wrapper/src";
+
+      vendorHash = null;
+
+      subPackages = [ "." ];
+    };
+
+    tests = {
+      inherit (nixosTests)
+        ncps
+        ncps-custom-sqlite-directory
+        ncps-custom-storage-local
+        ncps-ha-pg
+        ncps-ha-pg-redis
+        ;
+    };
+
+    updateScript = nix-update-script { };
+  };
+
+  meta = {
+    description = "Nix binary cache proxy service";
+    homepage = "https://github.com/kalbasit/ncps";
+    license = lib.licenses.mit;
+    mainProgram = "ncps";
+    maintainers = with lib.maintainers; [
+      kalbasit
+      aciceri
+    ];
+  };
+})