diff --git a/composer.json b/composer.json
index 73cd20f3d1..1a52abbc37 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "ext-ctype" : "*",
         "ext-filter" : "*",
         "ext-session" : "*",
-        "christian-riesen/otp" : "1.4.3",
+        "christian-riesen/otp" : "2.7.0",
         "eluceo/ical": "0.16.1",
         "erusev/parsedown" : "^1.7",
         "pimple/pimple" : "3.4.0",