diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 2971fbf..0000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,80 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  branch = "master"
-  digest = "1:f3793f8a708522400cef1dba23385e901aede5519f68971fd69938ef330b07a1"
-  name = "github.com/alecthomas/template"
-  packages = [
-    ".",
-    "parse",
-  ]
-  pruneopts = "NUT"
-  revision = "a0175ee3bccc567396460bf5acd36800cb10c49c"
-
-[[projects]]
-  branch = "master"
-  digest = "1:fdd419e104ec26bb5bd63cc62637c640453ed2929a7453f3afadbd9a0223da66"
-  name = "github.com/alecthomas/units"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "2efee857e7cfd4f3d0138cc3cbb1b4966962b93a"
-
-[[projects]]
-  digest = "1:ade392a843b2035effb4b4a2efa2c3bab3eb29b992e98bacf9c898b0ecb54e45"
-  name = "github.com/fatih/color"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "5b77d2a35fb0ede96d138fc9a99f5c9b6aef11b4"
-  version = "v1.7.0"
-
-[[projects]]
-  digest = "1:08c231ec84231a7e23d67e4b58f975e1423695a32467a362ee55a803f9de8061"
-  name = "github.com/mattn/go-colorable"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "167de6bfdfba052fa6b2d3664c8f5272e23c9072"
-  version = "v0.0.9"
-
-[[projects]]
-  digest = "1:f4109742a922eca7b7a6a1f97f93cc5834e21a5f13a1e0c1cead73815ab75548"
-  name = "github.com/mattn/go-isatty"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "369ecd8cea9851e459abb67eb171853e3986591e"
-  version = "v0.0.6"
-
-[[projects]]
-  digest = "1:5cf3f025cbee5951a4ee961de067c8a89fc95a5adabead774f82822efabab121"
-  name = "github.com/pkg/errors"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
-  version = "v0.8.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:7a930dc8bf7a6f1ffb1a3b5ddb22cfd2cf4ef8a750c95a1f4f8166b5cbd07002"
-  name = "golang.org/x/sys"
-  packages = ["unix"]
-  pruneopts = "NUT"
-  revision = "10058d7d4faa7dd5ef860cbd31af00903076e7b8"
-
-[[projects]]
-  digest = "1:22b2dee6f30bc8601f087449a2a819df8388e54e9547349c658f14d8f8c590f2"
-  name = "gopkg.in/alecthomas/kingpin.v2"
-  packages = ["."]
-  pruneopts = "NUT"
-  revision = "947dcec5ba9c011838740e680966fd7087a71d0d"
-  version = "v2.2.6"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/fatih/color",
-    "github.com/pkg/errors",
-    "gopkg.in/alecthomas/kingpin.v2",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index d1b118d..0000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-[[constraint]]
-  name = "github.com/pkg/errors"
-  version = "0.8.0"
-
-[[constraint]]
-  name = "gopkg.in/alecthomas/kingpin.v2"
-  version = "2.2.6"
-
-[prune]
-  go-tests = true
-  unused-packages = true
-  non-go = true
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..85c49fd
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,14 @@
+module github.com/jsonnet-bundler/jsonnet-bundler
+
+go 1.12
+
+require (
+	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc
+	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf
+	github.com/fatih/color v1.7.0
+	github.com/mattn/go-colorable v0.0.9
+	github.com/mattn/go-isatty v0.0.6
+	github.com/pkg/errors v0.8.0
+	golang.org/x/sys v0.0.0-20190310054646-10058d7d4faa
+	gopkg.in/alecthomas/kingpin.v2 v2.2.6
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..87e51d6
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,17 @@
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc h1:cAKDfWh5VpdgMhJosfJnn5/FoN2SRZ4p7fJNX58YPaU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf h1:qet1QNfXsQxTZqLG4oE62mJzwPIB8+Tee4RNCL9ulrY=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
+github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
+github.com/mattn/go-colorable v0.0.9 h1:UVL0vNpWh04HeJXV0KLcaT7r06gOH2l4OW6ddYRUIY4=
+github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
+github.com/mattn/go-isatty v0.0.6 h1:SrwhHcpV4nWrMGdNcC2kXpMfcBVYGDuTArqyhocJgvA=
+github.com/mattn/go-isatty v0.0.6/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
+github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190310054646-10058d7d4faa h1:lqti/xP+yD/6zH5TqEwx2MilNIJY5Vbc6Qr8J3qyPIQ=
+golang.org/x/sys v0.0.0-20190310054646-10058d7d4faa/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=