diff --git a/CHANGELOG.md b/CHANGELOG.md
index ed6a195..62216d8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## 0.19.0 — 2026-10-11
 
 - **Added.** Bounded constructive generation for `prefixItems`/`contains`
   (including `minContains`/`maxContains`), `dependentRequired`,
@@ -19,6 +19,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
    the whole map, so every name received the schema of whichever name was drawn
    first — an object whose `^a` member carried a boolean and whose `z$` member
    carried a string, which the contract rejects (#157).
+- **Changed.** Requires `rasuvaeff/openapi-contract` `^0.16` (in place of
+  `^0.15`) for the schema keywords added in 0.16: `prefixItems`, `contains`
+  with `minContains`/`maxContains`, `dependentRequired`, `dependentSchemas`,
+  `unevaluatedProperties`/`unevaluatedItems` (#157).
 
 ## 0.18.0 — 2026-09-29
 
diff --git a/README.md b/README.md
index 5215508..c903abd 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ before it reaches a transport.
 
 - PHP 8.3 – 8.5
 - `ext-mbstring`
-- `rasuvaeff/openapi-contract` ^0.15 and `rasuvaeff/property-testing-core` ^1.0
+- `rasuvaeff/openapi-contract` ^0.16 and `rasuvaeff/property-testing-core` ^1.0
 - `psr/http-message`, `psr/http-factory` and `psr/http-server-handler`
   implementations — a PSR-17 factory materializes requests, and `ContractSuite`
   drives a PSR-15 handler in process
diff --git a/README.ru.md b/README.ru.md
index 2d75bd6..8ebd981 100644
--- a/README.ru.md
+++ b/README.ru.md
@@ -24,7 +24,7 @@ styles и JSON, form-urlencoded или multipart request body, после чег
 
 - PHP 8.3 – 8.5
 - `ext-mbstring`
-- `rasuvaeff/openapi-contract` ^0.15 и `rasuvaeff/property-testing-core` ^1.0
+- `rasuvaeff/openapi-contract` ^0.16 и `rasuvaeff/property-testing-core` ^1.0
 - реализации `psr/http-message`, `psr/http-factory` и
   `psr/http-server-handler`: PSR-17 factory материализует запросы, а
   `ContractSuite` гоняет PSR-15 handler в процессе
diff --git a/composer.json b/composer.json
index e027c48..38debf4 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "psr/http-factory": "^1.1",
         "psr/http-message": "^1.1 || ^2.0",
         "psr/http-server-handler": "^1.0",
-        "rasuvaeff/openapi-contract": "^0.15",
+        "rasuvaeff/openapi-contract": "^0.16",
         "rasuvaeff/property-testing-core": "^1.0"
     },
     "require-dev": {