diff --git a/tfp.cabal b/tfp.cabal
--- a/tfp.cabal
+++ b/tfp.cabal
@@ -1,5 +1,5 @@
 name:           tfp
-version:        1.0.1
+version:        1.0.1.1
 build-type:     Simple
 license:        BSD3
 license-file:   LICENSE
@@ -27,7 +27,7 @@
   location:     http://hub.darcs.net/thielema/tfp/
 
 source-repository this
-  tag:          1.0.1
+  tag:          1.0.1.1
   type:         darcs
   location:     http://hub.darcs.net/thielema/tfp/
 
@@ -36,7 +36,7 @@
   default-language: Haskell2010
   build-depends:
     utility-ht >=0.0.10 && <0.1,
-    base >=3.0 && <5
+    base >=4.5 && <5
   ghc-options: -Wall
   if impl(ghc>=8.0)
     ghc-options: -fno-warn-redundant-constraints