diff --git a/CHANGELOG.md b/CHANGELOG.md
index d7efb78..4b23c4d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,10 @@
 CHANGELOG
 =========
 
+### [1.0.1](https://github.com/webeweb/pixabay-library/tree/v1.0.1) (2019-07-22)
+
+- Add PHP extensions into Composer
+
 ### [1.0.0](https://github.com/webeweb/pixabay-library/tree/v1.0.0) (2019-07-06)
 
 - Initial release
diff --git a/composer.json b/composer.json
index cb95569..0227588 100644
--- a/composer.json
+++ b/composer.json
@@ -20,6 +20,7 @@
     ],
     "require": {
         "php": "^5.6|^7.0",
+        "ext-json": "*",
         "guzzlehttp/guzzle": "^6.0",
         "webeweb/core-library": "^5.0"
     },