diff --git a/composer.json b/composer.json
index 6538659..e9ecd83 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     "require": {
         "silverstripe/admin": "^2.0.0-beta1",
         "silverstripe/framework": "^5",
-        "monolog/monolog": "^3.3.1",
+        "monolog/monolog": "~1.11",
         "silverstripe/crontask": "^3.0.0-beta1"
     },
     "require-dev": {