diff --git a/composer.json b/composer.json
index 0f71718..7245271 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,7 @@
         "ext-json": "*",
         "ext-mbstring": "*",
         "brick/math": "^0.9|^0.10|^0.11|^0.12",
-        "paragonie/constant_time_encoding": "^2.6",
+        "paragonie/constant_time_encoding": "^3.0",
         "paragonie/sodium_compat": "^1.20",
         "psr/clock": "^1.0",
         "psr/http-factory": "^1.0",