diff --git a/.circleci/config.yml b/.circleci/config.yml
index 92c1a4ca..7367cc19 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,7 +2,7 @@ version: 2
 jobs:
   build:
     docker:
-      - image: circleci/golang:1.10.3
+      - image: circleci/golang:1.12.0
         environment:
           GOBIN: /tmp/workspace/bin
 
@@ -21,7 +21,7 @@ jobs:
                 export PATH="$GOBIN:$PATH"
                 go env
                 go version
-                make get_tools && make get_vendor_deps && make test
+                make get_tools && make && make test
       - save_cache:
           key: v1-dep-{{ .Branch }}
           paths:
diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 4589d933..00000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,47 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  name = "github.com/davecgh/go-spew"
-  packages = ["spew"]
-  revision = "346938d642f2ec3594ed81d874461961cd0faa76"
-  version = "v1.1.0"
-
-[[projects]]
-  name = "github.com/golang/protobuf"
-  packages = [
-    "proto",
-    "proto/proto3_proto",
-    "proto/test_proto",
-    "ptypes/any"
-  ]
-  revision = "b4deda0973fb4c70b50d226b1af49f3da59f5265"
-  version = "v1.1.0"
-
-[[projects]]
-  branch = "master"
-  name = "github.com/google/gofuzz"
-  packages = ["."]
-  revision = "24818f796faf91cd76ec7bddd72458fbced7a6c1"
-
-[[projects]]
-  name = "github.com/pmezard/go-difflib"
-  packages = ["difflib"]
-  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
-  version = "v1.0.0"
-
-[[projects]]
-  name = "github.com/stretchr/testify"
-  packages = [
-    "assert",
-    "require"
-  ]
-  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
-  version = "v1.2.2"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  inputs-digest = "8ca44333ad8ca8f143fc1513ae309425e548d9deb7c567eb18d197a4fef9a250"
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index cc862455..00000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,42 +0,0 @@
-# Gopkg.toml example
-#
-# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#   name = "github.com/x/y"
-#   version = "2.4.0"
-#
-# [prune]
-#   non-go = false
-#   go-tests = true
-#   unused-packages = true
-
-
-[[constraint]]
-  name = "github.com/davecgh/go-spew"
-  version = "1.1.0"
-
-[[constraint]]
-  branch = "master"
-  name = "github.com/google/gofuzz"
-
-[[constraint]]
-  name = "github.com/stretchr/testify"
-  version = "1.2.1"
-
-[prune]
-  go-tests = true
-  unused-packages = true
diff --git a/Makefile b/Makefile
index c322d019..392b395e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,9 +1,8 @@
 GOTOOLS = \
-	github.com/golang/dep/cmd/dep  \
 	gopkg.in/alecthomas/gometalinter.v2
-GOTOOLS_CHECK = dep gometalinter.v2
+GOTOOLS_CHECK = gometalinter.v2
 
-all: check_tools get_vendor_deps test metalinter
+all: check_tools test metalinter
 
 ########################################
 ###  Build
@@ -32,11 +31,6 @@ update_tools:
 	@echo "--> Updating tools"
 	@go get -u $(GOTOOLS)
 
-get_vendor_deps:
-	@rm -rf vendor/
-	@echo "--> Running dep ensure"
-	@dep ensure
-
 
 ########################################
 ### Testing
@@ -108,4 +102,4 @@ test_golang1.10rc:
 # To avoid unintended conflicts with file names, always add to .PHONY
 # unless there is a reason not to.
 # https://www.gnu.org/software/make/manual/html_node/Phony-Targets.html
-.PHONY: build install check_tools get_tools update_tools get_vendor_deps test fmt metalinter metalinter_all
+.PHONY: build install check_tools get_tools update_tools test fmt metalinter metalinter_all
diff --git a/go.mod b/go.mod
new file mode 100644
index 00000000..410e80ee
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,12 @@
+module github.com/tendermint/go-amino
+
+go 1.12
+
+require (
+	github.com/davecgh/go-spew v1.1.0
+	github.com/golang/protobuf v1.1.0
+	github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/testify v1.2.2
+	golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6 // indirect
+)