diff --git a/composer.json b/composer.json
index bd46e7d..defe9ee 100755
--- a/composer.json
+++ b/composer.json
@@ -31,6 +31,7 @@
     ],
     "bin": ["bin/check_perms"],
     "require": {
+        "symfony/polyfill-iconv": "^1",
         "phpro/grumphp": "^0.16.0",
         "drupal/coder": "^8",
         "phpcompatibility/php-compatibility": "^9.3",
@@ -42,6 +43,9 @@
         "mglaman/phpstan-drupal": "^0.11.1",
         "phpstan/phpstan-deprecation-rules": "^0.11.0"
     },
+    "provide": {
+        "ext-iconv": "*"
+    },
     "autoload": {
         "psr-4": {
             "Wunderio\\GrumPHP\\": "src/"