diff --git a/.gitignore b/.gitignore
index 7e69921..a5d525b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -49,6 +49,10 @@ coverage.xml
 # Sphinx documentation
 docs/_build/
 
+# reno
+RELEASENOTES.rst
+releasenotes/notes/reno.cache
+
 # pbr
 AUTHORS
 ChangeLog
diff --git a/releasenotes/notes/add-auto_envvar_prefix-support-a08e68aba792ee26.yaml b/releasenotes/notes/add-auto_envvar_prefix-support-a08e68aba792ee26.yaml
new file mode 100644
index 0000000..f8a29cb
--- /dev/null
+++ b/releasenotes/notes/add-auto_envvar_prefix-support-a08e68aba792ee26.yaml
@@ -0,0 +1,8 @@
+---
+features:
+  - |
+    The ``auto_envvar_prefix`` parameter, which enables automatic environmental
+    variables for all parameters in a click application, is now supported. For
+    more information on this feature, refer to the `click documentation`__.
+
+    .. __: https://click.palletsprojects.com/en/8.1.x/options/#values-from-environment-variables