diff --git a/composer.json b/composer.json
index 057be8f..7d570b5 100644
--- a/composer.json
+++ b/composer.json
@@ -24,7 +24,7 @@
     "ext-json": "*",
     "ext-openssl": "*",
     "php": "^8.1",
-    "paragonie/constant_time_encoding": ">= 2.6",
+    "paragonie/constant_time_encoding": "^2.7|^3",
     "paragonie/corner": "^2",
     "paragonie/easy-ecc": "^1.1",
     "paragonie/sodium_compat": "^1|^2"