diff --git a/attachments/envoy/go.mod b/attachments/envoy/go.mod
new file mode 100755
index 0000000..97fb593
--- /dev/null
+++ b/attachments/envoy/go.mod
@@ -0,0 +1,22 @@
+module gitlab.ngen.checkpoint.com/Ngen/agent-core/attachments/envoy
+
+// the version should >= 1.18
+go 1.22
+
+toolchain go1.22.5
+
+// NOTICE: these lines could be generated automatically by "go mod tidy"
+require (
+	github.com/cncf/xds/go v0.0.0-20231128003011-0fa0005c9caa
+	github.com/envoyproxy/envoy v1.32.1
+	google.golang.org/protobuf v1.35.1
+)
+
+require github.com/go-chi/chi/v5 v5.1.0
+
+require (
+	github.com/envoyproxy/protoc-gen-validate v1.0.2 // indirect
+	github.com/golang/protobuf v1.5.3 // indirect
+	google.golang.org/genproto/googleapis/api v0.0.0-20240102182953-50ed04b92917 // indirect
+	google.golang.org/genproto/googleapis/rpc v0.0.0-20240102182953-50ed04b92917 // indirect
+)