diff --git a/README.md b/README.md
index f7d276ba6feca3ee469989311ca9fc1924137b2d..577f851934b0d8f4728270a3c82d1d6a240073e8 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ First run:
 composer require bjornjohansen/wplang
 ```
 
+**Note**: If you running Composer v1, make sure to require a version less than `0.2.0`.
+
 Then you’ll have to edit your `composer.json` file. You need to add the following section:
 ```
 "extra": {