diff --git a/composer.json b/composer.json
index 58bbe4bb..0c1028b8 100644
--- a/composer.json
+++ b/composer.json
@@ -58,7 +58,7 @@
         "ext-openssl": "*",
         "ext-sodium": "*",
         "brick/math": "^0.9|^0.10",
-        "fgrosse/phpasn1": "^2.0",
+        "fgrosse/phpasn1": "^2.4",
         "paragonie/constant_time_encoding": "^2.4",
         "psr/event-dispatcher": "^1.0",
         "psr/http-client": "^1.0",