diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+* 0.2.0.5: 04 Dec 2014
+
+  - Allow semigroups-0.16
+
 * 0.2.0.4: 28 May 2014
 
   - Allow semigroups-0.15
diff --git a/dual-tree.cabal b/dual-tree.cabal
--- a/dual-tree.cabal
+++ b/dual-tree.cabal
@@ -1,5 +1,5 @@
 name:                dual-tree
-version:             0.2.0.4
+version:             0.2.0.5
 synopsis:            Rose trees with cached and accumulating monoidal annotations
 description:         Rose (n-ary) trees with both upwards- (/i.e./
                      cached) and downwards-traveling (/i.e./
@@ -41,7 +41,7 @@
   exposed-modules:   Data.Tree.DUAL
                      Data.Tree.DUAL.Internal
   build-depends:     base >= 4.3 && < 4.8,
-                     semigroups >= 0.8 && < 0.16,
+                     semigroups >= 0.8 && < 0.17,
                      newtype >= 0.2 && < 0.3,
                      monoid-extras >= 0.2 && < 0.4
   hs-source-dirs:    src