diff --git a/docs/en/conf.py b/docs/en/conf.py
index 85998bcdf5..35de41620a 100644
--- a/docs/en/conf.py
+++ b/docs/en/conf.py
@@ -29,4 +29,7 @@ language = 'en'
 
 html_zip = f'esp-idf-{language}-{release}'  # noqa: F405
 
-html_js_files = ['js/chatbot_widget_en.js']
+# The chatbot is able to answer only about the latest documentation.
+# Enable Documentation Chatbot widget only for the master branch.
+if release == 'latest':  # noqa: F405
+    html_js_files = ['js/chatbot_widget_en.js']
diff --git a/docs/zh_CN/conf.py b/docs/zh_CN/conf.py
index 3935958e0c..73100f2841 100644
--- a/docs/zh_CN/conf.py
+++ b/docs/zh_CN/conf.py
@@ -29,4 +29,7 @@ language = 'zh_CN'
 
 html_zip = f'esp-idf-{language}-{release}'  # noqa: F405
 
-html_js_files = ['js/chatbot_widget_cn.js']
+# The chatbot is able to answer only about the latest documentation.
+# Enable Documentation Chatbot widget only for the master branch.
+if release == 'latest':  # noqa: F405
+    html_js_files = ['js/chatbot_widget_cn.js']