diff --git a/CHANGELOG.md b/CHANGELOG.md
index b1d82e75..d06c310d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,19 @@
 ChangeLog
 =========
 
+5.0.0 (2026-07-07)
+------------------
+* #767 Drop PHP 7.4 8.0 8.1 and support PHP 8.2 and up (@phil-davis)
+* #769 fix: minor code fixes (@phil-davis)
+* #586 PHP types (@tcitworld @phil-davis)
+
+This major release v5 declares function parameter and return types across the
+codebase. Users will need to be careful to call functions/methods with the
+correct types.
+
+Support for PHP below 8.2 has been dropped.
+This release supports PHP 8.2 and up.
+
 4.6.1 (2026-07-07)
 ------------------
 * #776 fix: preserve UTC 'Z' indicator in Period JSON serialization (@bastien-roucaries @guimard @phil-davis)
diff --git a/lib/Version.php b/lib/Version.php
index 5bee6442..e851a650 100644
--- a/lib/Version.php
+++ b/lib/Version.php
@@ -14,5 +14,5 @@ class Version
     /**
      * Full version number.
      */
-    public const VERSION = '4.6.1';
+    public const VERSION = '5.0.0';
 }