diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+* 0.2.0.1: 27 November 2013
+
+  - Allow semigroups-0.12
+
 * 0.2: 5 November 2013
 
   - Expose internal d-annotations via foldDUAL
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,8 @@
-Copyright (c) 2011-2012, Brent Yorgey
+Copyright (c) 2011-2013, dual-tree team:
+
+  Jeffrey Rosenbluth <Jeffrey.Rosenbluth@gmail.com>
+  Ryan Yates <fryguybob@gmail.com>
+  Brent Yorgey <byorgey@gmail.com>
 
 All rights reserved.
 
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
+version:             0.2.0.1
 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 && < 0.12,
+                     semigroups >= 0.8 && < 0.13,
                      newtype >= 0.2 && < 0.3,
                      monoid-extras >= 0.2 && < 0.4
   hs-source-dirs:    src