diff --git a/simtreelo.cabal b/simtreelo.cabal
--- a/simtreelo.cabal
+++ b/simtreelo.cabal
@@ -10,7 +10,7 @@
 -- PVP summary:      +-+------- breaking API changes
 --                   | | +----- non-breaking API additions
 --                   | | | +--- code changes with no API change
-version:             0.1.1.0
+version:             0.1.1.1
 
 -- A short (one-line) description of the package.
 synopsis:            Loader for data organized in a tree
@@ -57,7 +57,7 @@
   -- other-extensions:    
   
   -- Other library packages from which modules are imported.
-  build-depends:       base >=4.8 && <4.9, containers
+  build-depends:       base >=4.8 && <=4.10, containers
   exposed-modules:     Data.Simtreelo
   default-extensions: DoAndIfThenElse, FlexibleInstances