diff --git a/README.md b/README.md
index 9332a3e3..658a2d74 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,16 @@
+<p align="center">
+    <b>
+        This demo is abandoned and will not be updated anymore.
+        <br>
+        See actual demo applications <a href="https://yiisoft.github.io/docs/guide/start/demo-apps.html">here</a>.
+    </b>
+</p>
+<p align="center">
+    ❌
+</p>
+
+---
+
 Yii 3 Demo Code
 ===============
 
diff --git a/blog-api/README.md b/blog-api/README.md
index ddb3136d..537b89ef 100644
--- a/blog-api/README.md
+++ b/blog-api/README.md
@@ -1,3 +1,16 @@
+<p align="center">
+    <b>
+        This demo is abandoned and will not be updated anymore.
+        <br>
+        See actual demo applications <a href="https://yiisoft.github.io/docs/guide/start/demo-apps.html">here</a>.
+    </b>
+</p>
+<p align="center">
+    ❌
+</p>
+
+---
+
 <p align="center">
     <a href="https://github.com/yiisoft" target="_blank">
         <img src="https://yiisoft.github.io/docs/images/yii_logo.svg" height="100px" alt="Yii">
diff --git a/blog/README.md b/blog/README.md
index 126a39c3..fadef5d6 100644
--- a/blog/README.md
+++ b/blog/README.md
@@ -1,3 +1,16 @@
+<p align="center">
+    <b>
+        This demo is abandoned and will not be updated anymore.
+        <br>
+        See actual demo applications <a href="https://yiisoft.github.io/docs/guide/start/demo-apps.html">here</a>.
+    </b>
+</p>
+<p align="center">
+    ❌
+</p>
+
+---
+
 <p align="center">
     <a href="https://www.yiiframework.com/" target="_blank">
         <img src="https://www.yiiframework.com/image/yii_logo_light.png" width="400" alt="Yii Framework" />