diff --git a/CHANGELOG.md b/CHANGELOG.md
index 141bb2d..ac07599 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-Unreleased Changes
+1.5.0 (2022-01-10)
 ------------------
 
 * Support implicitly convertible objects/duck-type values responding to `to_hash` and `to_ary`.
diff --git a/VERSION b/VERSION
index 88c5fb8..bc80560 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.4.0
+1.5.0