diff --git a/composer.json b/composer.json
index 2515e9f2..36be20b2 100644
--- a/composer.json
+++ b/composer.json
@@ -39,7 +39,7 @@
         "mezzio/mezzio-fastroute": "^3.12",
         "mezzio/mezzio-problem-details": "^1.15",
         "mlocati/ip-lib": "^1.18.1",
-        "mobiledetect/mobiledetectlib": "^4.8",
+        "mobiledetect/mobiledetectlib": "4.8.x-dev#920c549 as 4.9",
         "pagerfanta/core": "^3.8",
         "ramsey/uuid": "^4.7",
         "shlinkio/doctrine-specification": "^2.1.1",