diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+2.0.0.5
+-------
+* Relaxed upper version bound for `transformers`.
+
 2.0.0.4
 -------
 * Relaxed upper version bound for `OpenGLRaw`.
diff --git a/GLURaw.cabal b/GLURaw.cabal
--- a/GLURaw.cabal
+++ b/GLURaw.cabal
@@ -1,5 +1,5 @@
 name: GLURaw
-version: 2.0.0.4
+version: 2.0.0.5
 synopsis: A raw binding for the OpenGL graphics system
 description:
   GLURaw is a raw Haskell binding for the GLU 1.3 OpenGL utility library. It is
@@ -14,7 +14,7 @@
   and <http://www.opengl.org/registry/>.
 homepage: http://www.haskell.org/haskellwiki/Opengl
 bug-reports: https://github.com/haskell-opengl/GLURaw/issues
-copyright: Copyright (C) 2009-2016 Sven Panne
+copyright: Copyright (C) 2009-2018 Sven Panne
 license: BSD3
 license-file: LICENSE
 author: Sven Panne
@@ -22,12 +22,14 @@
 category: Graphics
 build-type: Simple
 tested-with:
-  GHC == 7.8.4
-  GHC == 7.10.3
   GHC == 8.0.2
   GHC == 8.2.2
-  GHC == 8.4.1
-  GHC == 8.5.*
+  GHC == 8.4.4
+  GHC == 8.6.5
+  GHC == 8.8.4
+  GHC == 8.10.7
+  GHC == 9.0.1
+  GHC == 9.2.1
 cabal-version:  >= 1.10
 extra-source-files:
   CHANGELOG.md
@@ -52,7 +54,7 @@
   hs-source-dirs: src
   build-depends:
     base         >= 4   && < 5,
-    transformers >= 0.2 && < 0.6,
+    transformers >= 0.2 && < 0.7,
     OpenGLRaw    >= 3.0 && < 3.4
   default-language: Haskell2010
   ghc-options: -Wall
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
 [![Hackage](https://img.shields.io/hackage/v/GLURaw.svg)](https://hackage.haskell.org/package/GLURaw)
 [![Stackage LTS](https://www.stackage.org/package/GLURaw/badge/lts)](https://www.stackage.org/lts/package/GLURaw)
 [![Stackage nightly](https://www.stackage.org/package/GLURaw/badge/nightly)](https://www.stackage.org/nightly/package/GLURaw)
-[![Build Status](https://img.shields.io/travis/haskell-opengl/GLURaw/master.svg)](https://travis-ci.org/haskell-opengl/GLURaw)
+[![Build Status](https://github.com/haskell-opengl/GLURaw/actions/workflows/haskell-ci.yml/badge.svg)](https://github.com/haskell-opengl/GLURaw/actions/workflows/haskell-ci.yml)
diff --git a/cbits/HsGLURaw.c b/cbits/HsGLURaw.c
--- a/cbits/HsGLURaw.c
+++ b/cbits/HsGLURaw.c
@@ -1,7 +1,7 @@
 /* -----------------------------------------------------------------------------
  *
  * Module      :  C support for Graphics.Rendering.GLU.Raw.Extensions
- * Copyright   :  (c) Sven Panne 2016
+ * Copyright   :  (c) Sven Panne 2018
  * License     :  BSD3
  *
  * Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU.hs b/src/Graphics/GLU.hs
--- a/src/Graphics/GLU.hs
+++ b/src/Graphics/GLU.hs
@@ -1,7 +1,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU/Callbacks.hs b/src/Graphics/GLU/Callbacks.hs
--- a/src/Graphics/GLU/Callbacks.hs
+++ b/src/Graphics/GLU/Callbacks.hs
@@ -2,7 +2,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU.Callbacks
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU/Functions.hs b/src/Graphics/GLU/Functions.hs
--- a/src/Graphics/GLU/Functions.hs
+++ b/src/Graphics/GLU/Functions.hs
@@ -2,7 +2,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU.Functions
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU/Tokens.hs b/src/Graphics/GLU/Tokens.hs
--- a/src/Graphics/GLU/Tokens.hs
+++ b/src/Graphics/GLU/Tokens.hs
@@ -5,7 +5,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU.Tokens
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU/Types.hs b/src/Graphics/GLU/Types.hs
--- a/src/Graphics/GLU/Types.hs
+++ b/src/Graphics/GLU/Types.hs
@@ -1,7 +1,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU.Types
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
diff --git a/src/Graphics/GLU/TypesInternal.hs b/src/Graphics/GLU/TypesInternal.hs
--- a/src/Graphics/GLU/TypesInternal.hs
+++ b/src/Graphics/GLU/TypesInternal.hs
@@ -2,7 +2,7 @@
 --------------------------------------------------------------------------------
 -- |
 -- Module      :  Graphics.GLU.TypesInternal
--- Copyright   :  (c) Sven Panne 2016
+-- Copyright   :  (c) Sven Panne 2018
 -- License     :  BSD3
 --
 -- Maintainer  :  Sven Panne <svenpanne@gmail.com>
