diff --git a/.gitignore b/.gitignore
index d702569..ef20fcf 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 release
+vendor
diff --git a/Gopkg.lock b/Gopkg.lock
new file mode 100644
index 0000000..ccf5c1d
--- /dev/null
+++ b/Gopkg.lock
@@ -0,0 +1,58 @@
+# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
+
+
+[[projects]]
+  digest = "1:57b5b4338ce45764b26f737a35f9383e37ae4caf10f1a72796ba6cea64ae9aa6"
+  name = "github.com/aws/aws-sdk-go"
+  packages = [
+    "aws",
+    "aws/awserr",
+    "aws/awsutil",
+    "aws/client",
+    "aws/client/metadata",
+    "aws/corehandlers",
+    "aws/credentials",
+    "aws/credentials/ec2rolecreds",
+    "aws/credentials/endpointcreds",
+    "aws/credentials/processcreds",
+    "aws/credentials/stscreds",
+    "aws/csm",
+    "aws/defaults",
+    "aws/ec2metadata",
+    "aws/endpoints",
+    "aws/request",
+    "aws/session",
+    "aws/signer/v4",
+    "internal/ini",
+    "internal/sdkio",
+    "internal/sdkrand",
+    "internal/sdkuri",
+    "internal/shareddefaults",
+    "private/protocol",
+    "private/protocol/json/jsonutil",
+    "private/protocol/query",
+    "private/protocol/query/queryutil",
+    "private/protocol/rest",
+    "private/protocol/xml/xmlutil",
+    "service/sts",
+  ]
+  pruneopts = "UT"
+  revision = "420cda5d6383f94f7d9c231aa44bad3325181950"
+  version = "v1.20.20"
+
+[[projects]]
+  digest = "1:bb81097a5b62634f3e9fec1014657855610c82d19b9a40c17612e32651e35dca"
+  name = "github.com/jmespath/go-jmespath"
+  packages = ["."]
+  pruneopts = "UT"
+  revision = "c2b33e84"
+
+[solve-meta]
+  analyzer-name = "dep"
+  analyzer-version = 1
+  input-imports = [
+    "github.com/aws/aws-sdk-go/aws/credentials/stscreds",
+    "github.com/aws/aws-sdk-go/aws/session",
+  ]
+  solver-name = "gps-cdcl"
+  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
new file mode 100644
index 0000000..c32df0d
--- /dev/null
+++ b/Gopkg.toml
@@ -0,0 +1,34 @@
+# Gopkg.toml example
+#
+# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
+# 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/aws/aws-sdk-go"
+  version = "1.20.20"
+
+[prune]
+  go-tests = true
+  unused-packages = true
diff --git a/Makefile b/Makefile
index 2977519..419d6f1 100644
--- a/Makefile
+++ b/Makefile
@@ -4,8 +4,12 @@ PLATFORMS := linux darwin
 
 os = $(word 1, $@)
 
+.PHONY: deps
+deps:
+	dep ensure
+
 .PHONY: $(PLATFORMS)
-$(PLATFORMS):
+$(PLATFORMS): deps
 	mkdir -p release
 	GOOS=$(os) GOARCH=amd64 go build -o release/$(BINARY)-$(VERSION)-$(os)-amd64
 	sha256sum release/$(BINARY)-$(VERSION)-$(os)-amd64 > release/checksum-$(VERSION)-$(os).txt