diff --git a/composer.json b/composer.json
index 4ceda09c..8d5fac80 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,6 @@
     "license": "AGPL-3.0-or-later",
     "require": {
         "php": "^7.2.5",
-        "ext-bcmath": "*",
         "ext-ctype": "*",
         "ext-gd": "*",
         "ext-iconv": "*",
@@ -79,6 +78,10 @@
         "symplify/easy-coding-standard": "^7.2.3",
         "vimeo/psalm": "^3.5"
     },
+    "suggest": {
+        "ext-bcmath": "Used to improve price calculation performance",
+        "ext-gmp": "Used to improve price calculation performanice"
+    },
     "config": {
         "preferred-install": {
             "*": "dist"