diff --git a/go.mod b/go.mod
new file mode 100644
index 00000000..9a244129
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,42 @@
+module github.com/mailgun/holster
+
+go 1.12
+
+require (
+	github.com/Shopify/toxiproxy v2.1.4+incompatible
+	github.com/coreos/bbolt v1.3.2 // indirect
+	github.com/coreos/etcd v3.3.10+incompatible
+	github.com/coreos/go-semver v0.3.0 // indirect
+	github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e // indirect
+	github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect
+	github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect
+	github.com/fatih/structs v1.1.0
+	github.com/gogo/protobuf v1.2.1 // indirect
+	github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef // indirect
+	github.com/golang/protobuf v1.3.1 // indirect
+	github.com/google/btree v1.0.0 // indirect
+	github.com/gorilla/mux v1.7.1 // indirect
+	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 // indirect
+	github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect
+	github.com/grpc-ecosystem/grpc-gateway v1.9.0 // indirect
+	github.com/jonboulle/clockwork v0.1.0 // indirect
+	github.com/pkg/errors v0.8.1
+	github.com/prometheus/client_golang v0.9.2 // indirect
+	github.com/sirupsen/logrus v1.4.1
+	github.com/soheilhy/cmux v0.1.4 // indirect
+	github.com/spf13/cobra v0.0.3 // indirect
+	github.com/spf13/pflag v1.0.3 // indirect
+	github.com/stretchr/testify v1.2.2
+	github.com/tmc/grpc-websocket-proxy v0.0.0-20190109142713-0ad062ec5ee5 // indirect
+	github.com/ugorji/go v1.1.4 // indirect
+	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
+	go.uber.org/atomic v1.4.0 // indirect
+	go.uber.org/multierr v1.1.0 // indirect
+	go.uber.org/zap v1.10.0 // indirect
+	golang.org/x/crypto v0.0.0-20190513172903-22d7a77e9e5f // indirect
+	golang.org/x/net v0.0.0-20190514140710-3ec191127204 // indirect
+	golang.org/x/time v0.0.0-20190308202827-9d24e82272b4 // indirect
+	google.golang.org/grpc v1.20.1
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 00000000..083e4150
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,133 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
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+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/coreos/bbolt v1.3.2 h1:wZwiHHUieZCquLkDL0B8UhzreNWsPHooDAG3q34zk0s=
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diff --git a/version b/version
index cc6c9a49..cb2b00e4 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-2.3.5
+3.0.1