diff --git a/CHANGELOG.md b/CHANGELOG.md
index 03156050..a5ea3b7b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@
 - Chg #339: Change return type of `Command::insertWithReturningPks()` method to `array|false` (@Tigrov)
 - New #319: Add parameters `$ifExists` and `$cascade` to `CommandInterface::dropTable()` and
   `DDLQueryBuilderInterface::dropTable()` methods (@vjik)
+- Chg #343: Remove `yiisoft/json` dependency (@Tigrov)
 
 ## 1.2.0 March 21, 2024
 
diff --git a/composer.json b/composer.json
index 52fe522d..a0e380b1 100644
--- a/composer.json
+++ b/composer.json
@@ -34,11 +34,9 @@
         "php": "8.1 - 8.4",
         "ext-mbstring": "*",
         "ext-pdo": "*",
-        "yiisoft/db": "dev-master",
-        "yiisoft/json": "^1.0"
+        "yiisoft/db": "dev-master"
     },
     "require-dev": {
-        "ext-json": "*",
         "maglnet/composer-require-checker": "^4.7.1",
         "phpunit/phpunit": "^10.5.45",
         "rector/rector": "^2.0.10",