diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+0.2.0.2
+=======
+
+- Fix build for newer packages
+
 0.2.0.1
 =======
 
diff --git a/push-notify-apn.cabal b/push-notify-apn.cabal
--- a/push-notify-apn.cabal
+++ b/push-notify-apn.cabal
@@ -1,5 +1,5 @@
 name:                push-notify-apn
-version:             0.2.0.1
+version:             0.2.0.2
 synopsis:            Send push notifications to mobile iOS devices
 description:
     push-notify-apn is a library and command line utility that can be used to send
@@ -24,7 +24,7 @@
   exposed-modules:     Network.PushNotify.APN
   build-depends:       base >= 4.7 && < 5
                      , aeson
-                     , base16-bytestring
+                     , base16-bytestring >= 1.0
                      , binary
                      , bytestring
                      , containers
diff --git a/src/Network/PushNotify/APN.hs b/src/Network/PushNotify/APN.hs
--- a/src/Network/PushNotify/APN.hs
+++ b/src/Network/PushNotify/APN.hs
@@ -9,6 +9,7 @@
 -- Send push notifications using Apple's HTTP2 APN API
 {-# LANGUAGE DeriveGeneric     #-}
 {-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE PackageImports    #-}
 {-# LANGUAGE RecordWildCards   #-}
 {-# LANGUAGE ScopedTypeVariables #-}
 {-# LANGUAGE TupleSections     #-}
@@ -73,9 +74,9 @@
 import           GHC.Generics
 import           Network.HTTP2                        (ErrorCodeId,
                                                        toErrorCodeId)
-import           Network.HTTP2.Client
-import           Network.HTTP2.Client.FrameConnection
-import           Network.HTTP2.Client.Helpers
+import "http2-client" Network.HTTP2.Client
+import "http2-client" Network.HTTP2.Client.FrameConnection
+import "http2-client" Network.HTTP2.Client.Helpers
 import           Network.TLS                          hiding (sendData)
 import           Network.TLS.Extra.Cipher
 import           System.IO.Error
@@ -136,7 +137,7 @@
     -- ^ The base16 (hex) encoded unique identifier for a device (APN token)
     -> ApnToken
     -- ^ The resulting token
-hexEncodedToken = ApnToken . B16.encode . fst . B16.decode . TE.encodeUtf8
+hexEncodedToken = ApnToken . B16.encode . B16.decodeLenient . TE.encodeUtf8
 
 -- | Exceptional responses to a send request
 data ApnException = ApnExceptionHTTP ErrorCodeId