diff --git a/ChangeLog.md b/ChangeLog.md
index eeeaf16aa366b304d958c78233b2f7a6240bc18b..08978dddbb905d714b9c1f823ed6afcf8914b8a7 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,12 @@
 # Changelog for horizon-spec
 
+## v0.6.4
+
+* Separate Types out into separate modules.
+* Horizon.Spec.Types.Modifiers: add `defaultModifiers`.
+* Horizon.Spec.Types.HaskellPackage: add `mkHaskellPackage`
+* Horizon.Spec.Utils: init with `call{Hackage, Git, Local, Tarball}`
+
 ## v0.6.3
 
 * Add `mkSubdir` splice function.
diff --git a/horizon-spec.cabal b/horizon-spec.cabal
index a1f5f61f5a1cac49525679eab4c2d6a6d8f6a4b8..9cbcc985ca951307b227053db1cdfd86c69e85a5 100644
--- a/horizon-spec.cabal
+++ b/horizon-spec.cabal
@@ -1,6 +1,6 @@
 cabal-version:      3.0
 name:               horizon-spec
-version:            0.6.3
+version:            0.6.4
 synopsis:           Horizon Stable Package Set Type Definitions
 description:
   This package contains the type definitions for the Horizon stable package set (https://horizon-haskell.net). This is a schema used to define package sets sourcing from hackage and git.