diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,12 +1,10 @@
 # Changelog
 
-All notable changes to this package will be documented in this file.
-
-The format is based on
-[Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
-and this project adheres to the
-[Haskell Package Versioning Policy](https://pvp.haskell.org/).
-
 ## 1.0.0.0 - 2018-12-20
 
 - Initial release
+
+## 1.0.0.1 - 2019-05-18
+
+- Replace `hex-text` package dependency with slightly smaller `base16-bytestring` dependency
+ 
diff --git a/library/Stripe/Signature.hs b/library/Stripe/Signature.hs
--- a/library/Stripe/Signature.hs
+++ b/library/Stripe/Signature.hs
@@ -13,16 +13,17 @@
 import           Numeric.Natural (Natural)
 import qualified Text.Read
 
+-- base16-bytestring
+import qualified Data.ByteString.Base16
+
 -- bytestring
 import Data.ByteString (ByteString)
+import qualified Data.ByteString
 
 -- cryptonite
 import Crypto.Hash     (SHA256)
 import Crypto.MAC.HMAC as HMAC
 
--- hex-text
-import qualified Text.Hex
-
 -- memory
 import qualified Data.ByteArray
 
@@ -32,6 +33,7 @@
 -- text
 import           Data.Text (Text)
 import qualified Data.Text
+import qualified Data.Text.Encoding
 
 isSigValid :: Sig -> WebhookSecretKey -> ByteString -> Bool
 isSigValid x secret body =
@@ -84,7 +86,7 @@
           v1 = Data.Maybe.mapMaybe
               ( \(k, v) ->
                   if k == Data.Text.pack "v1"
-                  then Text.Hex.decodeHex v
+                  then decodeHex v
                   else Nothing
               )
               parts
@@ -109,3 +111,15 @@
 
 readNatural :: String -> Maybe Natural
 readNatural = Text.Read.readMaybe
+
+{- | Decodes hexidecimal text as a byte string. The result is a 'Just' value iff
+the text contains an even number of characters and consists only of the digits
+@0@ through @9@ and letters @a@ through @f@. -}
+
+decodeHex :: Text -> Maybe ByteString
+decodeHex txt =
+    let
+        bs = Data.Text.Encoding.encodeUtf8 txt
+        (x, remainder) = Data.ByteString.Base16.decode bs
+    in
+        if Data.ByteString.null remainder then Just x else Nothing
diff --git a/license.txt b/license.txt
--- a/license.txt
+++ b/license.txt
@@ -1,4 +1,4 @@
-Copyright 2018 Typeclass Consulting, LLC
+Copyright 2019 Typeclass Consulting, LLC
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
diff --git a/stripe-signature.cabal b/stripe-signature.cabal
--- a/stripe-signature.cabal
+++ b/stripe-signature.cabal
@@ -1,5 +1,5 @@
 name: stripe-signature
-version: 1.0.0.0
+version: 1.0.0.1
 
 synopsis: Verification of Stripe webhook signatures
 category: Web
@@ -23,7 +23,7 @@
 
 build-type: Simple
 cabal-version: >=1.10
-tested-with: GHC==8.2.2, GHC==8.4.3, GHC==8.6.1
+tested-with: GHC==8.2.2, GHC==8.4.4, GHC==8.6.3
 
 extra-source-files:
     changelog.md
@@ -37,9 +37,9 @@
 
     build-depends:
         base >=4.10 && <5
+      , base16-bytestring
       , bytestring
       , cryptonite
-      , hex-text
       , memory
       , stripe-concepts
       , text