diff --git a/composer.json b/composer.json
index 209d43f..72d881a 100644
--- a/composer.json
+++ b/composer.json
@@ -27,12 +27,15 @@
         "php": ">=7.0",
         "ext-json": "*",
         "yiisoft/yii2": "^2.0.42",
-        "bower-asset/bootstrap": "^5.1.0",
-        "twbs/bootstrap-icons": "^1.7.5"
+        "bower-asset/bootstrap": "^5.1.0"
     },
     "require-dev": {
         "yiisoft/yii2-coding-standards": "~2.0",
-        "phpunit/phpunit": "^6.5.14"
+        "phpunit/phpunit": "^6.5.14",
+        "twbs/bootstrap-icons": "^1.7.5"
+    },
+    "suggest": {
+        "twbs/bootstrap-icons": "Add this package to the `require` section of your `composer.json` if you'd like to use the bootstrap icon asset."
     },
     "repositories": [
         {