diff --git a/README.md b/README.md
index 3beb520..5d09f7e 100644
--- a/README.md
+++ b/README.md
@@ -28,5 +28,8 @@
 console.log(xmlDoc.count('//grandchild')); // Prints "2"
 ```
 
+## Disclaimer
+We (the ISTEX team) noticed some critical bugs related to [libxmljs](https://github.com/libxmljs/libxmljs). Some of our documents (we were not able to identify them precisely) generate segmentation fault signals. This happens very rarely but we thought it was worth mentioning.
+
 ## Documentation
 Check the [`docs`](https://gitbucket.inist.fr/istex/libxmljs-extra/tree/master/docs) directory.