diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index 4de072b..211de98 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,5 +1,5 @@
-next [????.??.??]
------------------
+5.1.9 [2022.06.26]
+------------------
 * Simplify the `Eq` and `Ord` instances for `FT` to avoid the use of
   overlapping instances.
 
diff --git a/free.cabal b/free.cabal
index 6c29f8f..38d06eb 100644
--- a/free.cabal
+++ b/free.cabal
@@ -1,6 +1,6 @@
 name:          free
 category:      Control, Monads
-version:       5.1.8
+version:       5.1.9
 license:       BSD3
 cabal-version: 1.18
 license-file:  LICENSE