diff --git a/CHANGELOG.md b/CHANGELOG.md
index f581e5a..79c8e2c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## [1.1.0] - 2016-08-04
+### Added
+- `Pair::copy`
+
 ## [1.0.4] - 2016-08-01
 ### Fixed
 - `unserialize` memory leak when failed to unserialize.
diff --git a/composer.json b/composer.json
index 4e83b61..300b6e0 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
         }
     ],
     "require-dev": {
-        "php-ds/tests": "dev-master"
+        "php-ds/tests": "^1.1"
     },
     "scripts": {
         "test": "vendor/bin/phpunit -c ./vendor/php-ds/tests/phpunit.xml"
diff --git a/package.xml b/package.xml
index fe248a3..3fbb1b7 100644
--- a/package.xml
+++ b/package.xml
@@ -19,8 +19,8 @@
     <date>2016-08-01</date>
     <time>17:52:00</time>
     <version>
-        <release>1.0.4</release>
-        <api>1.0.3</api>
+        <release>1.1.0</release>
+        <api>1.1.0</api>
     </version>
     <stability>
         <release>stable</release>
@@ -28,8 +28,7 @@
     </stability>
     <license uri="https://opensource.org/licenses/MIT">MIT License</license>
     <notes>
-        Fix memory leak when unserialize fails
-        Fix bad hash table bucket copy
+        Add Pair::copy
     </notes>
     <contents>
         <dir name="/">
diff --git a/php_ds.h b/php_ds.h
index 79cff27..6071687 100644
--- a/php_ds.h
+++ b/php_ds.h
@@ -20,7 +20,7 @@ extern zend_module_entry ds_module_entry;
 #define phpext_ds_ptr &ds_module_entry
 
 /* Replace with version number for your extension */
-#define PHP_DS_VERSION "1.0.4"
+#define PHP_DS_VERSION "1.1.0"
 
 #ifdef PHP_WIN32
 #  define PHP_API __declspec(dllexport)