diff --git a/graph-rewriting-trs.cabal b/graph-rewriting-trs.cabal
--- a/graph-rewriting-trs.cabal
+++ b/graph-rewriting-trs.cabal
@@ -1,5 +1,5 @@
 Name:           graph-rewriting-trs
-Version:        0.1.7
+Version:        0.1.8
 Copyright:      (c) 2011, Jan Rochel
 License:        BSD3
 License-File:   LICENSE
@@ -17,17 +17,17 @@
 Executable trs
   Main-Is:        Main.hs
   Build-Depends:
-    base >= 4 && < 4.9,
-    base-unicode-symbols >= 0.2 && < 0.3,
-    graph-rewriting >= 0.7.8 && < 0.8,
-    graph-rewriting-layout >= 0.5.4 && < 0.6,
-    graph-rewriting-gl >= 0.7.6 && < 0.8,
-    uu-parsinglib >= 2.7 && < 2.10,
-    containers >= 0.4 && < 0.6,
-    GLUT >= 2.2 && < 2.8,
-    OpenGL == 3.*,
-    filepath >= 1.1 && < 1.5,
-    directory >= 1.0 && < 1.3
+    base >= 4 && < 5,
+    base-unicode-symbols >= 0.2,
+    graph-rewriting >= 0.7.8,
+    graph-rewriting-layout >= 0.5.4,
+    graph-rewriting-gl >= 0.7.6,
+    uu-parsinglib >= 2.7,
+    containers >= 0.4,
+    GLUT >= 2.2,
+    OpenGL >= 3.0,
+    filepath >= 1.1,
+    directory >= 1.0
   Extensions:
     UnicodeSyntax
     FlexibleInstances