diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # CHANGELOG
 
+## master
+
+
+## v0.1.0.1
+
+* Bump `base64` requirement to v1.0.
+* Documentation fixes.
+
 ## v0.1.0.0
 
 * Initial release
diff --git a/gemini-exports.cabal b/gemini-exports.cabal
--- a/gemini-exports.cabal
+++ b/gemini-exports.cabal
@@ -1,18 +1,18 @@
 cabal-version: 1.12
 
--- This file has been generated from package.yaml by hpack version 0.34.4.
+-- This file has been generated from package.yaml by hpack version 0.36.0.
 --
 -- see: https://github.com/sol/hpack
 
 name:           gemini-exports
-version:        0.1.0.0
+version:        0.1.0.1
 synopsis:       Generate CSV Exports of Your Gemini Trades, Transfers, & Earn Transactions
 description:    @gemini-exports@ is a CLI program that queries the Gemini Exchange's API
                 for your Trade History, Transfer History, & Earn History and exports all
                 fetched data to a CSV file.
                 .
                 You can install @gemini-exports@ with Stack: @stack install --resolver
-                nightly gemii-exports@. Then run the following to print out your complete
+                nightly gemini-exports@. Then run the following to print out your complete
                 history:
                 .
                 @
@@ -62,7 +62,7 @@
   build-depends:
       aeson <3
     , base >=4.7 && <5
-    , base64 <1
+    , base64 ==1.*
     , bytestring <1
     , cassava <1
     , cmdargs >=0.10 && <1
diff --git a/src/Web/Gemini.hs b/src/Web/Gemini.hs
--- a/src/Web/Gemini.hs
+++ b/src/Web/Gemini.hs
@@ -52,7 +52,8 @@
                                                 , encode
                                                 , withObject
                                                 )
-import           Data.ByteString.Base64         ( encodeBase64 )
+import           Data.Base64.Types              ( extractBase64 )
+import           Data.ByteString.Base64         ( encodeBase64' )
 import           Data.Maybe                     ( fromMaybe
                                                 , listToMaybe
                                                 , mapMaybe
@@ -354,7 +355,7 @@
     -> m (JsonResponse response)
 protectedGeminiRequest method url body = do
     cfg <- ask
-    let payload   = encodeUtf8 . encodeBase64 . LBS.toStrict $ encode body
+    let payload   = extractBase64 . encodeBase64' . LBS.toStrict $ encode body
         signature = createSignature cfg payload
     let authorizedOptions = mconcat
             [ header "Content-Type"       "text/plain"