diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.2.0.1
+
+* Update README
+
 # 0.2.0.0
 
 * Clean up and renamings
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -56,3 +56,8 @@
 * [HoleyMonoid](http://hackage.haskell.org/package/HoleyMonoid)
 
 * [formatting](http://hackage.haskell.org/package/formatting)
+
+* [category-printf](http://hackage.haskell.org/package/category-printf-0.1.1.0)
+ I learned from the author of that library Cale Gibbard in [this reddit comment](https://www.reddit.com/r/haskellquestions/comments/an2qoh/quantifiedconstraints_what_is_it_i_am_not_getting/efsla4g) that the `Format` type in that library (called `FunctionBuilder` in this library) is an alias for
+
+     "(...)the cokleisli category for the comonad of functions on a monoid, which is already in the comonad library"
diff --git a/function-builder.cabal b/function-builder.cabal
--- a/function-builder.cabal
+++ b/function-builder.cabal
@@ -1,5 +1,5 @@
 name:                function-builder
-version:             0.2.0.0
+version:             0.2.0.1
 synopsis:            Create poly variadic functions for monoidal results
 description:         Please see README.md
 homepage:            https://github.com/sheyll/function-builder#readme