diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index 19723f711..c0c4fb319 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -21,7 +21,7 @@ jobs:
         with:
           coverage: "none"
           php-version: "7.4"
-          tools: cs2pr, pecl, composer:v2
+          tools: cs2pr, pecl, composer:2.2
           extensions: pdo, pdo_mysql, pdo_sqlite, pdo_pgsql, curl, imagick, pgsql, gd, tidy
           ini-values: "date.timezone=Europe/Paris"
         env:
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
index 7d2857210..8fedde388 100644
--- a/.github/workflows/continuous-integration.yml
+++ b/.github/workflows/continuous-integration.yml
@@ -50,7 +50,7 @@ jobs:
         with:
           php-version: "${{ matrix.php }}"
           coverage: none
-          tools: pecl, composer:v2
+          tools: pecl, composer:2.2
           extensions: json, pdo, pdo_mysql, pdo_sqlite, pdo_pgsql, curl, imagick, pgsql, gd, tidy
           ini-values: "date.timezone=Europe/Paris"
 
diff --git a/.github/workflows/translations.yml b/.github/workflows/translations.yml
index 7a355d323..bfc91bf7d 100644
--- a/.github/workflows/translations.yml
+++ b/.github/workflows/translations.yml
@@ -26,7 +26,7 @@ jobs:
         with:
           coverage: "none"
           php-version: "${{ matrix.php }}"
-          tools: pecl, composer:v2
+          tools: pecl, composer:2.2
           extensions: pdo, pdo_mysql, pdo_sqlite, pdo_pgsql, curl, imagick, pgsql, gd, tidy
           ini-values: "date.timezone=Europe/Paris"
         env:
diff --git a/composer.json b/composer.json
index 0a42525cb..0c22c58d0 100644
--- a/composer.json
+++ b/composer.json
@@ -34,6 +34,7 @@
     },
     "require": {
         "php": ">=7.2.5",
+        "composer": "< 2.3",
         "ext-ctype": "*",
         "ext-curl": "*",
         "ext-dom": "*",
diff --git a/composer.lock b/composer.lock
index 7ca1066e8..86fc4211b 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "bc4de754a149aefb830b843e23cdbaff",
+    "content-hash": "3db24875e7ef009b7598c36bafac8a3a",
     "packages": [
         {
             "name": "babdev/pagerfanta-bundle",
@@ -12924,6 +12924,7 @@
     "prefer-lowest": false,
     "platform": {
         "php": ">=7.2.5",
+        "composer": "< 2.3",
         "ext-ctype": "*",
         "ext-curl": "*",
         "ext-dom": "*",
diff --git a/var/SymfonyRequirements.php b/var/SymfonyRequirements.php
index c1c530775..4a1fcc621 100644
--- a/var/SymfonyRequirements.php
+++ b/var/SymfonyRequirements.php
@@ -455,6 +455,12 @@ class SymfonyRequirements extends RequirementCollection
             );
         }
 
+        $this->addRequirement(
+            function_exists('iconv'),
+            'iconv() must be available',
+            'Install and enable the <strong>iconv</strong> extension.'
+        );
+
         $this->addRequirement(
             function_exists('json_encode'),
             'json_encode() must be available',