diff --git a/pkgs/by-name/nc/ncps/package.nix b/pkgs/by-name/nc/ncps/package.nix
index 01138fed0746..e97fd113eab7 100644
--- a/pkgs/by-name/nc/ncps/package.nix
+++ b/pkgs/by-name/nc/ncps/package.nix
@@ -1,35 +1,113 @@
 {
   buildGoModule,
+  curl,
   dbmate,
   fetchFromGitHub,
   lib,
+  minio,
+  minio-client,
+  python3,
 }:
 
 let
   finalAttrs = {
     pname = "ncps";
-    version = "0.4.0";
+    version = "0.5.0";
 
     src = fetchFromGitHub {
       owner = "kalbasit";
       repo = "ncps";
       tag = "v${finalAttrs.version}";
-      hash = "sha256-A2HLbob9MHHCUNIC1OBwyFeE6KuEIdXW75hPSZMgicI=";
+      hash = "sha256-3ncDDJ0vqmM6Aer/qnEgGZ/eglFmY0oAnMsLJseMQg8=";
     };
 
     ldflags = [
       "-X github.com/kalbasit/ncps/cmd.Version=v${finalAttrs.version}"
     ];
 
-    vendorHash = "sha256-Plc1L23qOYj1evVIG+O3OxVAKVeEIA+Z6sP4Z/T1SxU=";
+    vendorHash = "sha256-3YPKlz7+x7nYCqKmOroaiUyZGKIQMGFxcNyPnrA9Tio=";
 
     doCheck = true;
     checkFlags = [ "-race" ];
 
     nativeBuildInputs = [
+      curl # used for checking MinIO health check
       dbmate # used for testing
+      minio # S3-compatible storage for integration tests
+      minio-client # mc CLI for MinIO setup
+      python3 # used for generating the ports
     ];
 
+    # Start MinIO before running tests to enable S3 integration tests
+    preCheck = ''
+      echo "🚀 Starting MinIO for S3 integration tests..."
+
+      # Create temporary directories for MinIO data and config
+      export MINIO_DATA_DIR=$(mktemp -d)
+      export HOME=$(mktemp -d)
+
+      # Configure MinIO credentials (must be set before starting MinIO)
+      export MINIO_ROOT_USER=admin
+      export MINIO_ROOT_PASSWORD=password
+      export MINIO_REGION=us-east-1
+
+      # Generate random free ports using python
+      # We bind to port 0, get the assigned port, and close the socket immediately.
+      # In a Nix sandbox, the race condition risk (port being stolen between check and use) is negligible.
+      export MINIO_PORT=$(python3 -c 'import socket; s=socket.socket(); s.bind(("", 0)); print(s.getsockname()[1]); s.close()')
+      export CONSOLE_PORT=$(python3 -c 'import socket; s=socket.socket(); s.bind(("", 0)); print(s.getsockname()[1]); s.close()')
+
+      # Export S3 test environment variables
+      export NCPS_TEST_S3_BUCKET="test-bucket"
+      export NCPS_TEST_S3_ENDPOINT="http://127.0.0.1:$MINIO_PORT"
+      export NCPS_TEST_S3_REGION="us-east-1"
+      export NCPS_TEST_S3_ACCESS_KEY_ID="test-access-key"
+      export NCPS_TEST_S3_SECRET_ACCESS_KEY="test-secret-key"
+
+      # Start MinIO server in background
+      minio server "$MINIO_DATA_DIR" \
+        --address "127.0.0.1:$MINIO_PORT" \
+        --console-address "127.0.0.1:$CONSOLE_PORT" &
+      export MINIO_PID=$!
+
+      # Wait for MinIO to be ready
+      echo "⏳ Waiting for MinIO to be ready..."
+      for i in {1..30}; do
+        if curl -sf "$NCPS_TEST_S3_ENDPOINT/minio/health/live"; then
+          echo "✅ MinIO is ready"
+          break
+        fi
+        if [ $i -eq 30 ]; then
+          echo "❌ MinIO failed to start"
+          kill $MINIO_PID 2>/dev/null || true
+          exit 1
+        fi
+        sleep 1
+      done
+
+      # Setup admin alias
+      mc alias set local "$NCPS_TEST_S3_ENDPOINT" "$MINIO_ROOT_USER" "$MINIO_ROOT_PASSWORD"
+
+      # Create test bucket
+      mc mb "local/$NCPS_TEST_S3_BUCKET" || true
+
+      # Create service account for tests
+      mc admin user svcacct add \
+        --access-key "$NCPS_TEST_S3_ACCESS_KEY_ID" \
+        --secret-key "$NCPS_TEST_S3_SECRET_ACCESS_KEY" \
+        local admin || true
+
+      echo "✅ MinIO configured for S3 integration tests"
+    '';
+
+    # Stop MinIO after tests complete
+    postCheck = ''
+      echo "🛑 Stopping MinIO..."
+      kill $MINIO_PID 2>/dev/null || true
+      rm -rf "$MINIO_DATA_DIR"
+      echo "✅ MinIO stopped and cleaned up"
+    '';
+
     postInstall = ''
       mkdir -p $out/share/ncps
       cp -r db $out/share/ncps/db