diff --git a/composer.json b/composer.json
index 89ee2ca..3c95111 100644
--- a/composer.json
+++ b/composer.json
@@ -27,6 +27,6 @@
         "ext-pcre": "*",
         "ext-spl": "*",
         "php": ">=5.4.8",
-        "phpseclib/phpseclib": "1.0.0"
+        "phpseclib/phpseclib": "~1.0"
     }
 }