diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 006ad54..0000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,72 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  digest = "1:a2c1d0e43bd3baaa071d1b9ed72c27d78169b2b269f71c105ac4ba34b1be4a39"
-  name = "github.com/davecgh/go-spew"
-  packages = ["spew"]
-  pruneopts = "UT"
-  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
-  version = "v1.1.0"
-
-[[projects]]
-  digest = "1:e2d1d410fb367567c2b53ed9e2d719d3c1f0891397bb2fa49afd747cfbf1e8e4"
-  name = "github.com/mattn/go-runewidth"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "9e777a8366cce605130a531d2cd6363d07ad7317"
-  version = "v0.0.2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:e68cd472b96cdf7c9f6971ac41bcc1d4d3b23d67c2a31d2399446e295bc88ae9"
-  name = "github.com/mitchellh/go-wordwrap"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "ad45545899c7b13c020ea92b2072220eefad42b8"
-
-[[projects]]
-  branch = "master"
-  digest = "1:c9b6e36dbd23f8403a04493376916ca5dad8c01b2da5ae0a05e6a468eb0b6f24"
-  name = "github.com/nsf/termbox-go"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "5c94acc5e6eb520f1bcd183974e01171cc4c23b3"
-
-[[projects]]
-  digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
-  name = "github.com/pmezard/go-difflib"
-  packages = ["difflib"]
-  pruneopts = "UT"
-  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
-  version = "v1.0.0"
-
-[[projects]]
-  digest = "1:18752d0b95816a1b777505a97f71c7467a8445b8ffb55631a7bf779f6ba4fa83"
-  name = "github.com/stretchr/testify"
-  packages = ["assert"]
-  pruneopts = "UT"
-  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
-  version = "v1.2.2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:7427036b6d926b3d1fa0773771820735b35554a98296f1074df440ee30a97296"
-  name = "golang.org/x/net"
-  packages = ["websocket"]
-  pruneopts = "UT"
-  revision = "f4c29de78a2a91c00474a2e689954305c350adf9"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/davecgh/go-spew/spew",
-    "github.com/mattn/go-runewidth",
-    "github.com/mitchellh/go-wordwrap",
-    "github.com/nsf/termbox-go",
-    "github.com/stretchr/testify/assert",
-    "golang.org/x/net/websocket",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index 8ef822b..0000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,11 +0,0 @@
-[[constraint]]
-  name = "github.com/davecgh/go-spew"
-  version = "1.1.0"
-
-[[constraint]]
-  name = "github.com/mitchellh/go-wordwrap"
-  branch = "master"
-
-[prune]
-  go-tests = true
-  unused-packages = true
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..96dcf96
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,11 @@
+module github.com/gizak/termui
+
+require (
+	github.com/davecgh/go-spew v1.1.0
+	github.com/mattn/go-runewidth v0.0.2
+	github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7
+	github.com/nsf/termbox-go v0.0.0-20180613055208-5c94acc5e6eb
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/testify v1.2.2
+	golang.org/x/net v0.0.0-20180801234040-f4c29de78a2a
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..155ffe5
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,14 @@
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/mattn/go-runewidth v0.0.2 h1:UnlwIPBGaTZfPQ6T1IGzPI0EkYAQmT9fAEJ/poFC63o=
+github.com/mattn/go-runewidth v0.0.2/go.mod h1:LwmH8dsx7+W8Uxz3IHJYH5QSwggIsqBzpuz5H//U1FU=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7 h1:DpOJ2HYzCv8LZP15IdmG+YdwD2luVPHITV96TkirNBM=
+github.com/mitchellh/go-wordwrap v0.0.0-20150314170334-ad45545899c7/go.mod h1:ZXFpozHsX6DPmq2I0TCekCxypsnAUbP2oI0UX1GXzOo=
+github.com/nsf/termbox-go v0.0.0-20180613055208-5c94acc5e6eb h1:YahEjAGkJtCrkqgVHhX6n8ZX+CZ3hDRL9fjLYugLfSs=
+github.com/nsf/termbox-go v0.0.0-20180613055208-5c94acc5e6eb/go.mod h1:IuKpRQcYE1Tfu+oAQqaLisqDeXgjyyltCfsaoYN18NQ=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/net v0.0.0-20180801234040-f4c29de78a2a h1:8fCF9zjAir2SP3N+axz9xs+0r4V8dqPzqsWO10t8zoo=
+golang.org/x/net v0.0.0-20180801234040-f4c29de78a2a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=