diff --git a/README.md b/README.md
index d9f523f..885bc64 100644
--- a/README.md
+++ b/README.md
@@ -40,6 +40,9 @@ To verify the native `.node` packages, follow the same steps as above using `mon
 
 ## MongoDB Node.js Driver Version Compatibility
 
+>[!Note]
+`@mongodb-js/zstd@1.x` is deprecated - please use `@mongodb-js/zstd@2.x` instead.
+
 Only the following version combinations with the [MongoDB Node.js Driver](https://github.com/mongodb/node-mongodb-native) are considered stable.
 
 |                  | `@mongodb-js/zstd@1.x` | `@mongodb-js/zstd@2.x` |