diff --git a/composer.json b/composer.json
index 85c0e2f8..d379ae68 100644
--- a/composer.json
+++ b/composer.json
@@ -83,6 +83,9 @@
         },
         "sort-packages": true
     },
+    "conflict": {
+        "mongodb/mongodb": "<1.21"
+    },
     "autoload": {
         "psr-4": {
             "PhpLlm\\LlmChain\\": "src/"