diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@
 
 ## Version
 
-`1.4.0`
+`1.4.1`
 
 
 ## Description
diff --git a/amazonka-marketplace-metering.cabal b/amazonka-marketplace-metering.cabal
--- a/amazonka-marketplace-metering.cabal
+++ b/amazonka-marketplace-metering.cabal
@@ -1,5 +1,5 @@
 name:                  amazonka-marketplace-metering
-version:               1.4.0
+version:               1.4.1
 synopsis:              Amazon Marketplace Metering SDK.
 homepage:              https://github.com/brendanhay/amazonka
 bug-reports:           https://github.com/brendanhay/amazonka/issues
@@ -60,7 +60,7 @@
         , Network.AWS.MarketplaceMetering.Types.Sum
 
     build-depends:
-          amazonka-core == 1.4.0.*
+          amazonka-core == 1.4.1.*
         , base          >= 4.7     && < 5
 
 test-suite amazonka-marketplace-metering-test
@@ -80,9 +80,9 @@
         , Test.AWS.MarketplaceMetering.Internal
 
     build-depends:
-          amazonka-core == 1.4.0.*
-        , amazonka-test == 1.4.0.*
-        , amazonka-marketplace-metering == 1.4.0.*
+          amazonka-core == 1.4.1.*
+        , amazonka-test == 1.4.1.*
+        , amazonka-marketplace-metering == 1.4.1.*
         , base
         , bytestring
         , tasty
diff --git a/gen/Network/AWS/MarketplaceMetering/MeterUsage.hs b/gen/Network/AWS/MarketplaceMetering/MeterUsage.hs
--- a/gen/Network/AWS/MarketplaceMetering/MeterUsage.hs
+++ b/gen/Network/AWS/MarketplaceMetering/MeterUsage.hs
@@ -122,6 +122,8 @@
 
 instance Hashable MeterUsage
 
+instance NFData MeterUsage
+
 instance ToHeaders MeterUsage where
         toHeaders
           = const
@@ -176,3 +178,5 @@
 -- | The response status code.
 mursResponseStatus :: Lens' MeterUsageResponse Int
 mursResponseStatus = lens _mursResponseStatus (\ s a -> s{_mursResponseStatus = a});
+
+instance NFData MeterUsageResponse
diff --git a/gen/Network/AWS/MarketplaceMetering/Types.hs b/gen/Network/AWS/MarketplaceMetering/Types.hs
--- a/gen/Network/AWS/MarketplaceMetering/Types.hs
+++ b/gen/Network/AWS/MarketplaceMetering/Types.hs
@@ -58,6 +58,8 @@
       | has (hasCode "ThrottlingException" . hasStatus 400) e =
           Just "throttling_exception"
       | has (hasCode "Throttling" . hasStatus 400) e = Just "throttling"
+      | has (hasStatus 504) e = Just "gateway_timeout"
+      | has (hasStatus 502) e = Just "bad_gateway"
       | has (hasStatus 503) e = Just "service_unavailable"
       | has (hasStatus 500) e = Just "general_server_error"
       | has (hasStatus 509) e = Just "limit_exceeded"