diff --git a/gnuplot.cabal b/gnuplot.cabal
--- a/gnuplot.cabal
+++ b/gnuplot.cabal
@@ -1,5 +1,5 @@
 Name:             gnuplot
-Version:          0.5.3.1
+Version:          0.5.4
 License:          BSD3
 License-File:     LICENSE
 Author:           Henning Thielemann <haskell@henning-thielemann.de>
@@ -50,7 +50,7 @@
   data/runtime.data
 
 Source-Repository this
-  Tag:         0.5.3.1
+  Tag:         0.5.4
   Type:        darcs
   Location:    http://code.haskell.org/gnuplot/
 
@@ -75,7 +75,7 @@
 
 Library
   Build-Depends:
-    filepath >=1.1 && <1.4,
+    filepath >=1.1 && <1.5,
     temporary >=1.1 && <1.3,
     array >=0.1 && <0.6,
     containers >=0.1 && <0.6,
@@ -83,12 +83,11 @@
     data-accessor-transformers >=0.2.1 && <0.3,
     data-accessor >=0.2.2 && <0.3,
     transformers >=0.3 && <0.5,
-    deepseq >=1.0 && <1.4
+    deepseq >=1.0 && <1.5
   If flag(splitBase)
     Build-Depends:
       process >=1.0 && <1.3,
-      time >=1.1 && <1.5,
-      old-locale >=1.0 && <1.1,
+      time >=1.5 && <1.6,
       base >=2 && <5
   Else
     Build-Depends:
@@ -162,7 +161,7 @@
 
 Executable gnuplot-demo
   If flag(buildExamples)
-    Build-Depends: filepath >=1.1 && <1.4
+    Build-Depends: filepath
   Else
     Buildable: False
   GHC-Options: -Wall
diff --git a/src/Graphics/Gnuplot/Time.hs b/src/Graphics/Gnuplot/Time.hs
--- a/src/Graphics/Gnuplot/Time.hs
+++ b/src/Graphics/Gnuplot/Time.hs
@@ -1,7 +1,6 @@
 module Graphics.Gnuplot.Time where
 
-import System.Locale (defaultTimeLocale, )
-import Data.Time.Format (FormatTime, formatTime, )
+import Data.Time.Format (FormatTime, formatTime, defaultTimeLocale, )
 import Data.Tuple.HT (mapFst, )
 
 {- |
diff --git a/src/Graphics/Gnuplot/Value/Tuple.hs b/src/Graphics/Gnuplot/Value/Tuple.hs
--- a/src/Graphics/Gnuplot/Value/Tuple.hs
+++ b/src/Graphics/Gnuplot/Value/Tuple.hs
@@ -9,7 +9,7 @@
    ColumnCount(ColumnCount),
    ) where
 
-import System.Locale (defaultTimeLocale, )
+import Data.Time.Format (defaultTimeLocale, )
 import qualified Data.Time as Time
 
 import Data.Word (Word8, Word16, Word32, Word64, )