diff --git a/packages/std/CHANGELOG.md b/packages/std/CHANGELOG.md
index 3e2d8aa..141e035 100644
--- a/packages/std/CHANGELOG.md
+++ b/packages/std/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## [Unreleased]
 
+## [0.16.0] - 2026-07-29
+
 ### Added
 
 - Added `Duration`, an immutable length of time. `DateTime` could already apply a duration through `add`/`subtract` and measure one through `diff`, but there was no value type to hold one: no ISO-8601 duration parsing, no way to express a span without collapsing it to a single unit, and nothing to pass around. `Duration` parses and serialises `P1Y2M3DT4H5M6S`, holds calendar and exact units side by side, and compares, negates and combines them.
diff --git a/packages/std/package.json b/packages/std/package.json
index 04d4c16..dc02c0d 100644
--- a/packages/std/package.json
+++ b/packages/std/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@opentf/std",
-  "version": "0.15.1",
+  "version": "0.16.0",
   "description": "The Modern JavaScript Standard Library. A lightweight, high-accuracy, runtime-agnostic collection of essential utilities.",
   "keywords": [
     "collection",