diff --git a/composer.json b/composer.json
index 2a3cb2df..c9aa3dbb 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,8 @@
         "php": "^7.1||^8.0"
     },
     "suggest": {
-        "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present"
+        "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present",
+        "ext-sodium": "Support EdDSA (Ed25519) signatures"
     },
     "autoload": {
         "psr-4": {