diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index a4b088e..2adc20a 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,5 +1,5 @@
-next [????.??.??]
------------------
+5.0.1 [2018.07.03]
+------------------
 * Make the `Semigroup`, `Apply`, and `Applicative` instances for `Validation`
   lazier.
 * Make `vap` lazier in its second argument.
diff --git a/either.cabal b/either.cabal
index 7626d3d..f5896d6 100644
--- a/either.cabal
+++ b/either.cabal
@@ -1,6 +1,6 @@
 name:          either
 category:      Control, Monads
-version:       5
+version:       5.0.1
 license:       BSD3
 cabal-version: >= 1.10
 license-file:  LICENSE