diff --git a/composer.lock b/composer.lock
index 9f464f86f..ef4ded9d7 100644
--- a/composer.lock
+++ b/composer.lock
@@ -377,16 +377,16 @@
         },
         {
             "name": "justinrainbow/json-schema",
-            "version": "5.2.10",
+            "version": "5.2.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/justinrainbow/json-schema.git",
-                "reference": "2ba9c8c862ecd5510ed16c6340aa9f6eadb4f31b"
+                "reference": "2ab6744b7296ded80f8cc4f9509abbff393399aa"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/justinrainbow/json-schema/zipball/2ba9c8c862ecd5510ed16c6340aa9f6eadb4f31b",
-                "reference": "2ba9c8c862ecd5510ed16c6340aa9f6eadb4f31b",
+                "url": "https://api.github.com/repos/justinrainbow/json-schema/zipball/2ab6744b7296ded80f8cc4f9509abbff393399aa",
+                "reference": "2ab6744b7296ded80f8cc4f9509abbff393399aa",
                 "shasum": ""
             },
             "require": {
@@ -441,9 +441,9 @@
             ],
             "support": {
                 "issues": "https://github.com/justinrainbow/json-schema/issues",
-                "source": "https://github.com/justinrainbow/json-schema/tree/5.2.10"
+                "source": "https://github.com/justinrainbow/json-schema/tree/5.2.11"
             },
-            "time": "2020-05-27T16:41:55+00:00"
+            "time": "2021-07-22T09:24:00+00:00"
         },
         {
             "name": "psr/log",
diff --git a/src/Composer/Util/ErrorHandler.php b/src/Composer/Util/ErrorHandler.php
index 10f1c2472..7c25fbae4 100644
--- a/src/Composer/Util/ErrorHandler.php
+++ b/src/Composer/Util/ErrorHandler.php
@@ -52,6 +52,11 @@ class ErrorHandler
         }
 
         if (self::$io) {
+            // ignore symfony/console deprecation warning
+            if (0 === strpos($message, 'Return type of Symfony\\Component\\Console\\Helper\\HelperSet::getIterator() should either be compatible with IteratorAggregate::getIterator')) {
+                return true;
+            }
+
             self::$io->writeError('<warning>Deprecation Notice: '.$message.' in '.$file.':'.$line.'</warning>');
             if (self::$io->isVerbose()) {
                 self::$io->writeError('<warning>Stack trace:</warning>');