diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-google-oauth2-jwt - Copyright Michel Boucey (c) 2016-2024
+google-oauth2-jwt - Copyright Michel Boucey (c) 2016-2025
 
 All rights reserved.
 
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Google-oauth2-jwt ![CI](https://github.com/MichelBoucey/google-oauth2-jwt/actions/workflows/haskell-ci.yml/badge.svg)
+# Google-oauth2-jwt ![CI](https://github.com/MichelBoucey/google-oauth2-jwt/actions/workflows/haskell-ci.yml/badge.svg) [![Hackage](https://img.shields.io/hackage/v/google-oauth2-jwt.svg)](https://hackage.haskell.org/package/google-oauth2-jwt)
 
 Google-oauth2-jwt implements the creation of the signed JWT for Google Service Accounts,
 to make authorized calls to Google APIs from server to server. All details here:
diff --git a/google-oauth2-jwt.cabal b/google-oauth2-jwt.cabal
--- a/google-oauth2-jwt.cabal
+++ b/google-oauth2-jwt.cabal
@@ -1,36 +1,48 @@
-name:                google-oauth2-jwt
-version:             0.3.3.1
-synopsis:            Get a signed JWT for Google Service Accounts
-description:         This library implements the creation of the
-                     signed JWT for Google Service Accounts.
-homepage:            https://github.com/MichelBoucey/google-oauth2-jwt
-license:             BSD3
-license-file:        LICENSE
-author:              Michel Boucey
-maintainer:          michel.boucey@gmail.com
-copyright:           (c) 2016-2024 - Michel Boucey
-category:            Google
-build-type:          Simple
-extra-source-files:  README.md
-cabal-version:       >= 1.10
+name:               google-oauth2-jwt
+version:            0.3.3.2
+synopsis:           Get a signed JWT for Google Service Accounts
+description:
+  A lightweight library to get the
+  signed JWT for Google Service Accounts
 
-Tested-With: GHC ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.8 || ==9.4.8 || ==9.6.3 || ==9.8.1
+homepage:           https://github.com/MichelBoucey/google-oauth2-jwt
+license:            BSD3
+license-file:       LICENSE
+author:             Michel Boucey
+maintainer:         michel.boucey@gmail.com
+copyright:          (c) 2016-2025 - Michel Boucey
+category:           Google
+build-type:         Simple
+extra-source-files: README.md
+cabal-version:      >=1.10
+tested-with:
+  GHC ==8.8.4
+   || ==8.10.7
+   || ==9.0.2
+   || ==9.2.8
+   || ==9.4.8
+   || ==9.6.7
+   || ==9.8.4
+   || ==9.10.2
+   || ==9.12.2
+   || ==9.14.1
 
 source-repository head
   type:     git
-  location: git://github.com/MichelBoucey/google-oauth2-jwt.git
+  location: https://github.com/MichelBoucey/google-oauth2-jwt.git
 
 library
-  hs-source-dirs:   src
-  exposed-modules:  Network.Google.OAuth2.JWT
-  build-depends:    base                >= 4.3    && < 5
-                  , base64-bytestring   >= 1.0.0  && < 1.3
-                  , bytestring          >= 0.10.6 && < 0.13
-                  , HsOpenSSL           >= 0.11.7 && < 0.12
-                  , RSA                 >= 2.4.1  && < 2.5
-                  , text                >= 1.2.2  && < 2.2
-                  , unix-time           >= 0.3.6  && < 0.5
-
-  default-language: Haskell2010
-  GHC-options:      -Wall
+  hs-source-dirs:     src
+  default-extensions: OverloadedStrings
+  exposed-modules:    Network.Google.OAuth2.JWT
+  build-depends:
+      base               >=4.3    && <5
+    , base64-bytestring  >=1.0.0  && <1.3
+    , bytestring         >=0.10.6 && <0.13
+    , HsOpenSSL          >=0.11.7 && <0.12
+    , RSA                >=2.4.1  && <2.5
+    , text               >=1.2.2  && <2.2
+    , unix-time          >=0.3.6  && <0.5
 
+  default-language:   Haskell2010
+  ghc-options:        -Wall
diff --git a/src/Network/Google/OAuth2/JWT.hs b/src/Network/Google/OAuth2/JWT.hs
--- a/src/Network/Google/OAuth2/JWT.hs
+++ b/src/Network/Google/OAuth2/JWT.hs
@@ -1,5 +1,3 @@
-{-# LANGUAGE OverloadedStrings #-}
-
 -- | Create a signed JWT needed to make the access token request
 -- to gain access to Google APIs for server to server applications.
 --
@@ -89,7 +87,7 @@
   -> [Scope]
   -- ^ The list of the permissions that the application requests.
   -> Maybe Int
-  -- ^ Expiration time (maximun and default value is an hour, 3600).
+  -- ^ Expiration time (maximun and default value is an hour, 3600 seconds).
   -> PrivateKey
   -- ^ The private key gotten from the PEM string obtained from the
   -- Google API Console.
@@ -111,7 +109,7 @@
             <> toT (utSeconds t) <> "}")
     return $
       either
-        (return $ Left "RSAError")
-        (\s -> return $ SignedJWT $ i <> "." <> encode (toStrict s))
+        (pure $ Left "RSAError")
+        (\s -> pure $ SignedJWT $ i <> "." <> encode (toStrict s))
         (rsassa_pkcs1_v1_5_sign hashSHA256 pk $ fromStrict i)