diff --git a/MuCheck.cabal b/MuCheck.cabal
--- a/MuCheck.cabal
+++ b/MuCheck.cabal
@@ -1,5 +1,5 @@
 name:                MuCheck
-version:             0.1.2.0
+version:             0.1.2.1
 synopsis:            Automated Mutation Testing
 description:         This package defines a mutation analysis library for haskell
                      programs. It does this by parsing the haskell source, and
@@ -14,10 +14,10 @@
 author:              Duc Lee <ledu@onid.oregonstate.edu>
                      Rahul Gopinath <rahul@gopinath.org>
 maintainer:          rahul@gopinath.org
--- copyright:           
 category:            Testing
 build-type:          Simple
 cabal-version:       >= 1.10
+extra-source-files:  changes.md
 
 source-repository    head
   type:              git
@@ -26,7 +26,7 @@
 source-repository    this
   type:              git
   location:          https://bitbucket.org/osu-testing/mucheck.git
-  tag:               0.1.2.0
+  tag:               0.1.2.1
 
 executable mucheck
   main-is:          Main.hs
diff --git a/changes.md b/changes.md
new file mode 100644
--- /dev/null
+++ b/changes.md
@@ -0,0 +1,36 @@
+# Changelog
+
+## [0.1.2.1] (Rahul Gopinath)
+  * Fix minor tagging issue
+## [0.1.2.0] (Rahul Gopinath)
+  * Update usage docs
+  * Add hspec test framework support
+  * Add docs on some functions
+  * Refactor summarizable to require only two functions
+  * Changes to allow random sampling of mutant categories
+  * Refactor more functions to common utils
+  * Add a changelog
+  * Add a todo
+
+## [0.1.1.0] (Rahul Gopinath)
+  * Add command line args
+  * Add support for executable in cabal
+  * Update docs
+  * Add hspec tests for common utils
+  * Refactor common utils
+  * Better description in cabal
+  * Better summarizable class for adding new test frameworks
+
+## [0.1.0.1] (Rahul Gopinath)
+  * Refactor the entire project
+  * Add tests
+  * Add docs
+  * Fix null check in ops
+  * Add support for functions with no parameter and operators (Onetwogoo)
+
+## [0.1.0.0]
+  * Added main, examples, mucheck.cabal,readme (Rahul Gopinath)
+  * Added HUnit support (Duc Lee)
+
+## [0.0.1.0] 2013-10-11
+  * Initial implementation (Duc Lee)
