diff --git a/go.mod b/go.mod
new file mode 100644
index 00000000..92d2b507
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,9 @@
+module github.com/lxn/walk
+
+go 1.14
+
+require (
+	github.com/lxn/win v0.0.0-20191128105842-2da648fda5b4
+	golang.org/x/sys v0.0.0-20200409092240-59c9f1ba88fa
+	gopkg.in/Knetic/govaluate.v3 v3.0.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 00000000..26099cbf
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,7 @@
+github.com/lxn/win v0.0.0-20191128105842-2da648fda5b4 h1:5BmtGkQbch91lglMHQ9JIDGiYCL3kBRBA0ItZTvOcEI=
+github.com/lxn/win v0.0.0-20191128105842-2da648fda5b4/go.mod h1:ouWl4wViUNh8tPSIwxTVMuS014WakR1hqvBc2I0bMoA=
+golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200409092240-59c9f1ba88fa h1:mQTN3ECqfsViCNBgq+A40vdwhkGykrrQlYe3mPj6BoU=
+golang.org/x/sys v0.0.0-20200409092240-59c9f1ba88fa/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+gopkg.in/Knetic/govaluate.v3 v3.0.0 h1:18mUyIt4ZlRlFZAAfVetz4/rzlJs9yhN+U02F4u1AOc=
+gopkg.in/Knetic/govaluate.v3 v3.0.0/go.mod h1:csKLBORsPbafmSCGTEh3U7Ozmsuq8ZSIlKk1bcqph0E=