diff --git a/src/Graphics/XDot/Parser.hs b/src/Graphics/XDot/Parser.hs
--- a/src/Graphics/XDot/Parser.hs
+++ b/src/Graphics/XDot/Parser.hs
@@ -4,7 +4,7 @@
    Module      : Graphics.XDot.Parser
    Copyright   : (c) Dennis Felsing
    License     : 3-Clause BSD-style
-   Maintainer  : dennis@felsin9.de
+   Maintainer  : dennis@felsing.org
 
    After an xdot file has been opened using GraphViz, its drawing operations
    can be parsed using this module.
@@ -295,7 +295,7 @@
                     let frac' = fromMaybe "" frac
                         expn' = fromMaybe 0 expn
                     ( return . fromRational . (* (10^^(expn' - fromIntegral (B.length frac'))))
-                      . (%1) . Data.GraphViz.Parsing.runParser' parseInt) (ds `B.append` frac')
+                      . (% 1) . Data.GraphViz.Parsing.runParser' parseInt) (ds `B.append` frac')
                  `P.onFail`
                  fail "Expected a floating point number"
       where
diff --git a/src/Graphics/XDot/Types.hs b/src/Graphics/XDot/Types.hs
--- a/src/Graphics/XDot/Types.hs
+++ b/src/Graphics/XDot/Types.hs
@@ -2,7 +2,7 @@
    Module      : Graphics.XDot.Types
    Copyright   : (c) Dennis Felsing
    License     : 3-Clause BSD-style
-   Maintainer  : dennis@felsin9.de
+   Maintainer  : dennis@felsing.org
 
    This module contains various types used to represent xdot parameters.
  -}
diff --git a/src/Graphics/XDot/Viewer.hs b/src/Graphics/XDot/Viewer.hs
--- a/src/Graphics/XDot/Viewer.hs
+++ b/src/Graphics/XDot/Viewer.hs
@@ -2,7 +2,7 @@
    Module      : Graphics.XDot.Viewer
    Copyright   : (c) Dennis Felsing
    License     : 3-Clause BSD-style
-   Maintainer  : dennis@felsin9.de
+   Maintainer  : dennis@felsing.org
 
    This module draws the operations of an xdot graph using Cairo and Pango on a
    Gtk canvas.
@@ -20,7 +20,8 @@
   layoutGetContext, createLayout)
 import Graphics.Rendering.Cairo hiding (x, y)
 
-import Control.Monad.State.Strict hiding (State)
+import Control.Monad
+import Control.Monad.State.Strict (evalStateT, modify, gets, lift)
 import qualified Control.Monad.State.Strict as MS
 
 import Control.DeepSeq
diff --git a/xdot.cabal b/xdot.cabal
--- a/xdot.cabal
+++ b/xdot.cabal
@@ -1,12 +1,12 @@
 name:               xdot
-version:            0.3.0.4
+version:            0.3.0.5
 license:            BSD3
 license-file:       LICENSE
 category:           Graphs, Graphics
-cabal-version:      >= 1.18
+cabal-version:      1.18
 build-type:         Simple
-author:             Dennis Felsing <dennis@felsin9.de>
-maintainer:         Dennis Felsing <dennis@felsin9.de>
+author:             Dennis Felsing <dennis@felsing.org>
+maintainer:         Dennis Felsing <dennis@felsing.org>
 copyright:          Dennis Felsing 2012-2019
 synopsis:           Parse Graphviz xdot files and interactively view them using GTK and Cairo
 description:        Parse Graphviz xdot files and interactively view them using
@@ -22,7 +22,7 @@
                     is now a separate project, in case anyone else may have a
                     use for it.
 
-tested-with: GHC == 8.0.2 || == 8.2.2 || == 8.4.4 || == 8.6.5
+tested-with: GHC == 8.0.2 || == 8.2.2 || == 8.4.4 || == 8.6.5 || == 8.8.4 || == 8.10.7 || == 9.0.2 || == 9.2.8 || == 9.4.7 || == 9.6.3 || == 9.8.1
 Extra-source-files: dot-examples/*.dot
 Library
   Exposed-modules: Graphics.XDot.Parser Graphics.XDot.Viewer Graphics.XDot.Types