diff --git a/abcnotation.cabal b/abcnotation.cabal
--- a/abcnotation.cabal
+++ b/abcnotation.cabal
@@ -1,6 +1,6 @@
 
 name:                   abcnotation
-version:                1.6.1
+version:                1.6.2
 synopsis:               Haskell representation and parser for ABC notation.
 author:                 Hans Hoglund
 maintainer:             Hans Hoglund
@@ -27,8 +27,8 @@
     exposed-modules:    Music.Abc
                         Music.Abc.Parser
     build-depends:      base                >= 4 && < 5,
+                        semigroups          >= 0.13.0.1 && < 1,
                         network,
-                        semigroups,
                         prettify,
                         parsec,
                         -- debug