diff --git a/lapack-ffi-tools.cabal b/lapack-ffi-tools.cabal
--- a/lapack-ffi-tools.cabal
+++ b/lapack-ffi-tools.cabal
@@ -1,5 +1,5 @@
 Name:             lapack-ffi-tools
-Version:          0.0
+Version:          0.0.0.1
 License:          BSD3
 License-File:     LICENSE
 Author:           Henning Thielemann <haskell@henning-thielemann.de>
@@ -22,7 +22,7 @@
   data/lapack.csv
 
 Source-Repository this
-  Tag:         0.0
+  Tag:         0.0.0.1
   Type:        darcs
   Location:    http://hub.darcs.net/thielema/lapack-ffi-tools/
 
@@ -50,7 +50,7 @@
 
 Executable create-lapack-ffi
   Build-Depends:
-    cassava >=0.4.5.1 && <0.5,
+    cassava >=0.4.5.1 && <0.6,
     optparse-applicative >=0.11 && <0.15,
     parsec >=3.1 && <3.2,
     explicit-exception >=0.1.7.3 && <0.2,