diff --git a/packed-dawg.cabal b/packed-dawg.cabal
--- a/packed-dawg.cabal
+++ b/packed-dawg.cabal
@@ -1,7 +1,7 @@
 
 
 name:                packed-dawg
-version:             0.2.0.3
+version:             0.2.0.4
 synopsis:            Generation and traversal of highly compressed directed acyclic word graphs. 
 description:         Generation and traversal of highly compressed directed acyclic word graphs.
 license:             BSD3
@@ -19,14 +19,14 @@
 
 library
   exposed-modules:      Data.DAWG.Packed      
-  build-depends:        base ==4.6.*, vector ==0.10.*, mtl ==2.1.*, 
+  build-depends:        base >= 4.6.0 && < 4.8.0, vector ==0.10.*, mtl ==2.1.*, 
                         vector-binary-instances ==0.2.1.*, binary ==0.7.*, deepseq==1.3.*, unordered-containers==0.2.*
 
 test-suite test
     main-is:            Tests.hs
     type:               exitcode-stdio-1.0
 
-    Build-depends:      base ==4.6.*, vector ==0.10.*, mtl ==2.1.*, 
+    Build-depends:      base >= 4.6.0 && < 4.8.0, vector ==0.10.*, mtl ==2.1.*, 
                         vector-binary-instances ==0.2.1.*, binary ==0.7.*, deepseq==1.3.*, unordered-containers==0.2.*,
 
                         QuickCheck >= 2.5, HUnit >= 1.2, tasty >= 0.3, tasty-quickcheck >= 0.3, tasty-hunit >= 0.2
@@ -35,7 +35,7 @@
 
 benchmark bench-dawg-gen
     main-is:            Benchmarks.hs
-    Build-depends:      base ==4.6.*, vector ==0.10.*, mtl ==2.1.*, 
+    Build-depends:      base >= 4.6.0 && < 4.8.0, vector ==0.10.*, mtl ==2.1.*, 
                         vector-binary-instances ==0.2.1.*, binary ==0.7.*, deepseq==1.3.*, unordered-containers==0.2.*,
 
                         criterion >= 0.8