diff --git a/README.md b/README.md
index 1e42ac9..58b6d37 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,9 @@ You can launch the application with by running:
 
 		$ ./gradlew bootRun
 
+This project uses `kotlin-spring` plugin to avoid requiring `open` modifier on proxified
+classes and methods, see [this blog post](https://blog.jetbrains.com/kotlin/2016/12/kotlin-1-0-6-is-here/) for more details.
+
 Make sure you have at least IntelliJ IDEA 2016.3 and Kotlin plugin 1.0.6 since `kotlin-spring` and
 `kotlin-jpa` compiler plugins require this version.