diff --git a/PaymentServer.cabal b/PaymentServer.cabal
index 134ce45a529fc52c21f8806b3bc2299dd34f5ea6..32971508c791ce13be333322420a05d7423ea838 100644
--- a/PaymentServer.cabal
+++ b/PaymentServer.cabal
@@ -1,5 +1,5 @@
 name:                PaymentServer
-version:             0.1.0.0
+version:             0.1.1.0
 synopsis:            Coordinate entities for the purchase of PrivateStorage.io vouchers.
 -- description:
 homepage:            https://github.com/privatestorageio/PaymentServer#readme
diff --git a/nix/servant-prometheus.nix b/nix/servant-prometheus.nix
index fb013289ac659a8bad420e5ef170d2a26517febe..547f29016d9af5e38ad98b362fcf7e24231cb72e 100644
--- a/nix/servant-prometheus.nix
+++ b/nix/servant-prometheus.nix
@@ -42,7 +42,7 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
     flags = {};
     package = {
       specVersion = "1.10";
-      identifier = { name = "servant-prometheus"; version = "0.1.0.0"; };
+      identifier = { name = "servant-prometheus"; version = "0.2.0.0"; };
       license = "BSD-3-Clause";
       copyright = "";
       maintainer = "Alex Mason <axman6@gmail.com>, Jack Kelly <jack.kelly@data61.csiro.au>";
@@ -106,7 +106,7 @@ in { system, compiler, flags, pkgs, hsPkgs, pkgconfPkgs, ... }:
     } // {
     src = (pkgs.lib).mkDefault (pkgs.fetchgit {
       url = "https://github.com/PrivateStorageio/servant-prometheus.git";
-      rev = "ec21c5ed50e6f6f8e52916ce71cd68fcd0166cad";
+      rev = "b1207d687aeb48bd035f986e88287391e4937e23";
       sha256 = "0lswszfs52x5rpf7lj46iv77zghcbr4d05dwssi63yzjll1ixizd";
       });
-    }
\ No newline at end of file
+    }
diff --git a/src/PaymentServer/Server.hs b/src/PaymentServer/Server.hs
index 8842dab1ee84f211897886dfbc181dcd12c09a4e..e811f2c09ca23129af1ce085d0ba2a82ca7545e5 100644
--- a/src/PaymentServer/Server.hs
+++ b/src/PaymentServer/Server.hs
@@ -23,10 +23,10 @@ import Servant
   , (:>)
   , (:<|>)((:<|>))
   )
+import Prometheus (register)
 import Servant.Prometheus
-  ( MeasureQuantiles(WithQuantiles)
-  , monitorServant
-  , makeMeters
+  ( monitorServant
+  , meters
   )
 
 import Web.Stripe.Client
@@ -94,5 +94,5 @@ paymentServerApp corsOrigins stripeConfig issuer =
 -- | Create middleware which captures metrics for the payment server app.
 makeMetricsMiddleware :: IO (Application -> Application)
 makeMetricsMiddleware = do
-  meters <- makeMeters paymentServerAPI WithQuantiles
-  return $ monitorServant paymentServerAPI meters
+  meters <- register $ meters paymentServerAPI
+  return $ monitorServant meters