diff --git a/AC-Colour.cabal b/AC-Colour.cabal
--- a/AC-Colour.cabal
+++ b/AC-Colour.cabal
@@ -1,6 +1,6 @@
 Cabal-Version: >= 1.6
 Name:          AC-Colour
-Version:       1.1.5
+Version:       1.1.6
 Stability:     Experimental
 Synopsis:      Efficient RGB colour types.
 
@@ -8,7 +8,7 @@
 
   This Haskell library is a basic RGB colour types, with
   both @Double@ and @Word8@ channel types. It implements
-  efficient conversions between the two (GHC-specific),
+  efficient conversions between the two,
   and general arithmetic over colours.
 
 Category:      Data, Math, Numerical, Graphics
@@ -17,7 +17,9 @@
 Author:        Andrew Coppin
 Maintainer:    MathematicalOrchid@hotmail.com
 Build-Type:    Simple
-Tested-With:   GHC == 7.0.2
+Tested-With:   GHC == 7.4.2
+
+Extra-Source-Files: ChangeLog.markdown
 
 Library
   Exposed-modules:
diff --git a/ChangeLog.markdown b/ChangeLog.markdown
new file mode 100644
--- /dev/null
+++ b/ChangeLog.markdown
@@ -0,0 +1,7 @@
+* Removed the `FastFloor` module, which was a workaround for a
+  GHC performance bug that got fixed years ago.
+
+* Removed dependency on `ghc-prim`, which was only used by
+  `FastFloor` anyway.
+
+* (Previous release was missing change log.)