diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..04a600f
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,10 @@
+module github.com/henrydcase/tlshandshake
+
+require (
+	github.com/cloudflare/sidh v0.0.0-20190228162259-d2f0f90e08aa // indirect
+	github.com/grantae/certinfo v0.0.0-20170412194111-59d56a35515b
+	github.com/henrydcase/nobs v0.0.0-20190523173228-9b3c0190b0be // indirect
+	github.com/henrydcase/th5 v0.0.0-20190523174653-71ad89487de5
+	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
+	golang.org/x/sys v0.0.0-20190523142557-0e01d883c5c5 // indirect
+)