diff --git a/spaceprobe.cabal b/spaceprobe.cabal
--- a/spaceprobe.cabal
+++ b/spaceprobe.cabal
@@ -1,5 +1,5 @@
 name:            spaceprobe
-version:         0.0.0
+version:         0.1.0
 license:         BSD3
 license-file:    LICENSE
 category:        Optimization
@@ -22,7 +22,7 @@
     tests/*.hs
 
 library
-  build-depends: base >= 2 && < 4,
+  build-depends: base >= 2 && <5,
                  containers,
                  clock,
                  erf,
@@ -41,7 +41,7 @@
     -Wall
 
   build-depends:
-    base >=2 && <4,
+    base >=2 && <5,
     QuickCheck >= 2.7,
     test-framework >= 0.8.0.2,
     test-framework-quickcheck2 >= 0.3.0.3,
@@ -58,7 +58,7 @@
   ghc-options: -O2 -Wall
 
   build-depends:
-    base >=2 && <4,
+    base >=2 && <5,
     criterion,
     spaceprobe