diff --git a/composer.json b/composer.json
index 466a747..b492c91 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     "php": ">=7.2.0",
     "ext-json": "*",
     "ext-openssl": "*",
-    "phpseclib/phpseclib": "^2.0"
+    "phpseclib/phpseclib": "^3.0"
   },
   "autoload": {
     "psr-4": {