diff --git a/.travis.yml b/.travis.yml
index b08aef7..62fd2b5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,10 @@
+language: go
+go:
+- 1.11
+- 1.12
+- 1.13
+env:
+  - GO111MODULE=on
 addons:
   apt:
     packages:
@@ -5,7 +12,17 @@ addons:
 install:
   - wget https://github.com/gohugoio/hugo/releases/download/v0.48/hugo_0.48_Linux-64bit.deb
   - sudo dpkg -i hugo_0.48_Linux-64bit.deb
-language: go
+  - go get golang.org/x/tools/cmd/cover
+  - go get github.com/mattn/goveralls
+  - go get golang.org/x/lint/golint
+script:
+  - go fmt ./...
+  - golint ./...
+  - go vet ./...
+  - go test -v -race -covermode=atomic -coverprofile=coverage.out ./...
+  - $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/goveralls -coverprofile=coverage.out -service=travis-ci -repotoken=${COVERALLS_TOKEN}
+after_success:
+  - cd docs && hugo && mv docs/* .
 deploy:
   provider: pages
   skip-cleanup: true
@@ -14,42 +31,3 @@ deploy:
   on:
     branch: master
   local-dir: docs
-env:
-  - TEST_PACKAGES='./core ./grpc ./limit ./limit/functions ./limiter ./measurements ./strategy ./strategy/matchers ./metric_registry/datadog ./metric_registry/gometrics ./examples/example_simple_limit ./examples/example_blocking_limit ./examples/grpc_unary ./examples/grpc_streaming'
-matrix:
-  include:
-  - go: "1.10"
-    before_script:
-      - go get golang.org/x/tools/cmd/cover
-      - go get github.com/mattn/goveralls
-      - go get golang.org/x/lint/golint
-      - go get github.com/golang/dep/cmd/dep
-      - dep ensure -v
-      - go fmt $TEST_PACKAGES
-      - golint $TEST_PACKAGES
-      - go vet -shadowstrict $TEST_PACKAGES
-  - go: "1.11"
-    before_script:
-      - go get golang.org/x/tools/cmd/cover
-      - go get github.com/mattn/goveralls
-      - go get golang.org/x/lint/golint
-      - go get github.com/golang/dep/cmd/dep
-      - dep ensure -v
-      - go fmt $TEST_PACKAGES
-      - golint $TEST_PACKAGES
-      - go vet -shadowstrict $TEST_PACKAGES
-  - go: "1.12"
-    before_script:
-      - go get golang.org/x/tools/cmd/cover
-      - go get github.com/mattn/goveralls
-      - go get golang.org/x/lint/golint
-      - go get github.com/golang/dep/cmd/dep
-      - dep ensure -v
-      - go fmt $TEST_PACKAGES
-      - golint $TEST_PACKAGES
-      - go vet $TEST_PACKAGES
-script:
-  - go test -v -race -covermode=atomic -coverprofile=coverage.out $TEST_PACKAGES
-  - $(go env GOPATH | awk 'BEGIN{FS=":"} {print $1}')/bin/goveralls -coverprofile=coverage.out -service=travis-ci -repotoken=${COVERALLS_TOKEN}
-after_success:
-  - cd docs && hugo && mv docs/* .
diff --git a/Gopkg.lock b/Gopkg.lock
deleted file mode 100644
index 0eadc6f..0000000
--- a/Gopkg.lock
+++ /dev/null
@@ -1,167 +0,0 @@
-# This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
-
-
-[[projects]]
-  digest = "1:bd285ec20a7450d2272631284de698f2d76e923a458fee90e99cc1db4b97708d"
-  name = "github.com/DataDog/datadog-go"
-  packages = ["statsd"]
-  pruneopts = "UT"
-  revision = "e67964b4021ad3a334e748e8811eb3cd6becbc6e"
-  version = "2.1.0"
-
-[[projects]]
-  digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
-  name = "github.com/davecgh/go-spew"
-  packages = ["spew"]
-  pruneopts = "UT"
-  revision = "8991bc29aa16c548c550c7ff78260e27b9ab7c73"
-  version = "v1.1.1"
-
-[[projects]]
-  digest = "1:4c0989ca0bcd10799064318923b9bc2db6b4d6338dd75f3f2d86c3511aaaf5cf"
-  name = "github.com/golang/protobuf"
-  packages = [
-    "proto",
-    "ptypes",
-    "ptypes/any",
-    "ptypes/duration",
-    "ptypes/timestamp",
-  ]
-  pruneopts = "UT"
-  revision = "aa810b61a9c79d51363740d207bb46cf8e620ed5"
-  version = "v1.2.0"
-
-[[projects]]
-  digest = "1:0028cb19b2e4c3112225cd871870f2d9cf49b9b4276531f03438a88e94be86fe"
-  name = "github.com/pmezard/go-difflib"
-  packages = ["difflib"]
-  pruneopts = "UT"
-  revision = "792786c7400a136282c1664665ae0a8db921c6c2"
-  version = "v1.0.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:c4556a44e350b50a490544d9b06e9fba9c286c21d6c0e47f54f3a9214597298c"
-  name = "github.com/rcrowley/go-metrics"
-  packages = ["."]
-  pruneopts = "UT"
-  revision = "e2704e165165ec55d062f5919b4b29494e9fa790"
-
-[[projects]]
-  digest = "1:18752d0b95816a1b777505a97f71c7467a8445b8ffb55631a7bf779f6ba4fa83"
-  name = "github.com/stretchr/testify"
-  packages = ["assert"]
-  pruneopts = "UT"
-  revision = "f35b8ab0b5a2cef36673838d662e249dd9c94686"
-  version = "v1.2.2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:deafe4ab271911fec7de5b693d7faae3f38796d9eb8622e2b9e7df42bb3dfea9"
-  name = "golang.org/x/net"
-  packages = [
-    "context",
-    "http/httpguts",
-    "http2",
-    "http2/hpack",
-    "idna",
-    "internal/timeseries",
-    "trace",
-  ]
-  pruneopts = "UT"
-  revision = "26e67e76b6c3f6ce91f7c52def5af501b4e0f3a2"
-
-[[projects]]
-  branch = "master"
-  digest = "1:6eb2645d74b43d9c87b51947df39f7c668a4f422cd512053f7f6f75bfaad0197"
-  name = "golang.org/x/sys"
-  packages = ["unix"]
-  pruneopts = "UT"
-  revision = "d0be0721c37eeb5299f245a996a483160fc36940"
-
-[[projects]]
-  digest = "1:a2ab62866c75542dd18d2b069fec854577a20211d7c0ea6ae746072a1dccdd18"
-  name = "golang.org/x/text"
-  packages = [
-    "collate",
-    "collate/build",
-    "internal/colltab",
-    "internal/gen",
-    "internal/tag",
-    "internal/triegen",
-    "internal/ucd",
-    "language",
-    "secure/bidirule",
-    "transform",
-    "unicode/bidi",
-    "unicode/cldr",
-    "unicode/norm",
-    "unicode/rangetable",
-  ]
-  pruneopts = "UT"
-  revision = "f21a4dfb5e38f5895301dc265a8def02365cc3d0"
-  version = "v0.3.0"
-
-[[projects]]
-  branch = "master"
-  digest = "1:c9e7a4b4d47c0ed205d257648b0e5b0440880cb728506e318f8ac7cd36270bc4"
-  name = "golang.org/x/time"
-  packages = ["rate"]
-  pruneopts = "UT"
-  revision = "fbb02b2291d28baffd63558aa44b4b56f178d650"
-
-[[projects]]
-  branch = "master"
-  digest = "1:4b89f7cb4fa89ee4b8ec3fff8e91105e7f1fee84761edcb063a738e376c53357"
-  name = "google.golang.org/genproto"
-  packages = ["googleapis/rpc/status"]
-  pruneopts = "UT"
-  revision = "4b56f30a1fd96a133a036b62cdd2a249883dd89b"
-
-[[projects]]
-  digest = "1:ab8e92d746fb5c4c18846b0879842ac8e53b3d352449423d0924a11f1020ae1b"
-  name = "google.golang.org/grpc"
-  packages = [
-    ".",
-    "balancer",
-    "balancer/base",
-    "balancer/roundrobin",
-    "codes",
-    "connectivity",
-    "credentials",
-    "encoding",
-    "encoding/proto",
-    "grpclog",
-    "internal",
-    "internal/backoff",
-    "internal/channelz",
-    "internal/envconfig",
-    "internal/grpcrand",
-    "internal/transport",
-    "keepalive",
-    "metadata",
-    "naming",
-    "peer",
-    "resolver",
-    "resolver/dns",
-    "resolver/passthrough",
-    "stats",
-    "status",
-    "tap",
-  ]
-  pruneopts = "UT"
-  revision = "8dea3dc473e90c8179e519d91302d0597c0ca1d1"
-  version = "v1.15.0"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/DataDog/datadog-go/statsd",
-    "github.com/rcrowley/go-metrics",
-    "github.com/stretchr/testify/assert",
-    "golang.org/x/time/rate",
-    "google.golang.org/grpc",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
deleted file mode 100644
index 43f21d9..0000000
--- a/Gopkg.toml
+++ /dev/null
@@ -1,37 +0,0 @@
-# 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/stretchr/testify"
-  version = "1.2.2"
-
-[[constraint]]
-  name = "google.golang.org/grpc"
-  version = "1.15.0"
-
-[prune]
-  go-tests = true
-  unused-packages = true
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..45ada92
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,17 @@
+module github.com/platinummonkey/go-concurrency-limits
+
+go 1.11
+
+require (
+	github.com/DataDog/datadog-go v0.0.0-20180330214955-e67964b4021a
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/golang/protobuf v1.2.0
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165
+	github.com/stretchr/testify v1.2.2
+	golang.org/x/net v0.0.0-20180911220305-26e67e76b6c3
+	golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e // indirect
+	golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2
+	google.golang.org/genproto v0.0.0-20180914223249-4b56f30a1fd9 // indirect
+	google.golang.org/grpc v1.15.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..d4ea1da
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,41 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/DataDog/datadog-go v0.0.0-20180330214955-e67964b4021a h1:zpQSzEApXM0qkXcpdjeJ4OpnBWhD/X8zT/iT1wYLiVU=
+github.com/DataDog/datadog-go v0.0.0-20180330214955-e67964b4021a/go.mod h1:LButxg5PwREeZtORoXG3tL4fMGNddJ+vMq1mwgfaqoQ=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b h1:VKtxabqXZkF25pY9ekfRL6a582T4P37/31XEstQ5p58=
+github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/golang/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:tluoj9z5200jBnyusfRPU2LqT6J+DAorxEvtC7LHB+E=
+github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+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/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165 h1:nkcn14uNmFEuGCb2mBZbBb24RdNRL08b/wb+xBOYpuk=
+github.com/rcrowley/go-metrics v0.0.0-20180503174638-e2704e165165/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
+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/lint v0.0.0-20180702182130-06c8688daad7/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
+golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20180911220305-26e67e76b6c3 h1:czFLhve3vsQetD6JOJ8NZZvGQIXlnN3/yXxbT6/awxI=
+golang.org/x/net v0.0.0-20180911220305-26e67e76b6c3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2 h1:+DCIGbF/swA92ohVg0//6X2IVY3KZs6p9mix0ziNYJM=
+golang.org/x/time v0.0.0-20180412165947-fbb02b2291d2/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/tools v0.0.0-20180828015842-6cd1fcedba52/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/genproto v0.0.0-20180914223249-4b56f30a1fd9 h1:lSYPu0aSPfwHktspWqXRpSKu3xU58qCR4tx5sYvjrE0=
+google.golang.org/genproto v0.0.0-20180914223249-4b56f30a1fd9/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/grpc v1.15.0 h1:Az/KuahOM4NAidTEuJCv/RonAA7rYsTPkqXVjr+8OOw=
+google.golang.org/grpc v1.15.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio=
+honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=