diff --git a/Gopkg.lock b/Gopkg.lock
index 958354d..90afb7e 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -1,21 +1,83 @@
 # This file is autogenerated, do not edit; changes may be undone by the next 'dep ensure'.
 
 
+[[projects]]
+  branch = "master"
+  name = "github.com/beorn7/perks"
+  packages = ["quantile"]
+  revision = "4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9"
+
 [[projects]]
   branch = "master"
   name = "github.com/golang/protobuf"
-  packages = ["jsonpb","proto","ptypes/struct"]
-  revision = "1e59b77b52bf8e4b449a57e6f79f21226d571845"
+  packages = [
+    "jsonpb",
+    "proto",
+    "ptypes/struct"
+  ]
+  revision = "925541529c1fa6821df4e44ce2723319eb2be768"
+
+[[projects]]
+  name = "github.com/matttproud/golang_protobuf_extensions"
+  packages = ["pbutil"]
+  revision = "3247c84500bff8d9fb6d579d800f20b3e091582c"
+  version = "v1.0.0"
+
+[[projects]]
+  name = "github.com/pkg/errors"
+  packages = ["."]
+  revision = "645ef00459ed84a119197bfb8d8205042c6df63d"
+  version = "v0.8.0"
+
+[[projects]]
+  name = "github.com/prometheus/client_golang"
+  packages = [
+    "prometheus",
+    "prometheus/promhttp"
+  ]
+  revision = "c5b7fccd204277076155f10851dad72b76a49317"
+  version = "v0.8.0"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/client_model"
+  packages = ["go"]
+  revision = "99fa1f4be8e564e8a6b613da7fa6f46c9edafc6c"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/common"
+  packages = [
+    "expfmt",
+    "internal/bitbucket.org/ww/goautoneg",
+    "model"
+  ]
+  revision = "89604d197083d4781071d3c65855d24ecfb0a563"
+
+[[projects]]
+  branch = "master"
+  name = "github.com/prometheus/procfs"
+  packages = [
+    ".",
+    "internal/util",
+    "nfs",
+    "xfs"
+  ]
+  revision = "cb4147076ac75738c9a7d279075a253c0cc5acbd"
 
 [[projects]]
   name = "github.com/twitchtv/twirp"
-  packages = [".","ctxsetters","internal/contextkeys"]
-  revision = "db96cdf354e8dc053e5ee5fe890bb0a7f18123ab"
-  version = "v5.0.0"
+  packages = [
+    ".",
+    "ctxsetters",
+    "internal/contextkeys"
+  ]
+  revision = "dff337b186d4ea1ada1d1e54ef422fdbcfa3113d"
+  version = "v5.1.0"
 
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "68c6686100dcabf5b9a90eef1f5a153c4b517f83b9645411b32df69562daddee"
+  inputs-digest = "e24bcd9e790e680c3d5acd7e827a6904b37c6f2cfb344cde10183ec4449b5d93"
   solver-name = "gps-cdcl"
   solver-version = 1
diff --git a/Gopkg.toml b/Gopkg.toml
index c7eb473..2d57b00 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -28,3 +28,7 @@
 [[constraint]]
   name = "github.com/twitchtv/twirp"
   version = "5.0.0"
+
+[[constraint]]
+  name = "github.com/prometheus/client_golang"
+  version = "0.8.0"