diff --git a/algebra.cabal b/algebra.cabal
--- a/algebra.cabal
+++ b/algebra.cabal
@@ -1,6 +1,6 @@
 name:          algebra
 category:      Math, Algebra
-version:       0.9.0.1
+version:       0.9.0.3
 license:       BSD3
 cabal-version: >= 1.6
 license-file:  LICENSE
@@ -42,7 +42,7 @@
     containers >= 0.3.0.0 && < 0.5,
     keys >= 1.8 && < 1.9,
     mtl >= 2.0 && < 2.1,
-    semigroups >= 0.5 && < 0.6,
+    semigroups >= 0.6 && < 0.7,
     semigroupoids >= 1.2.2 && < 1.3,
     representable-functors >= 2.0 && < 2.1,
     representable-tries >= 2.0 && < 2.1,