diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index a87cb10c5c..7151ee4d79 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -22,6 +22,12 @@ Changelog
  * Fix: Revise colour usage so that privacy & locked indicators can be seen in Windows High Contrast mode (LB (Ben Johnston))
 
 
+4.0.2 (xx.xx.xxxx) - IN DEVELOPMENT
+~~~~~~~~~~~~~~~~~~
+
+ * Fix: Ensure tag autocompletion dropdown has a solid background (LB (Ben) Johnston)
+
+
 4.0.1 (05.09.2022)
 ~~~~~~~~~~~~~~~~~~
 
diff --git a/docs/releases/4.0.2.md b/docs/releases/4.0.2.md
new file mode 100644
index 0000000000..5bf8ee049d
--- /dev/null
+++ b/docs/releases/4.0.2.md
@@ -0,0 +1,16 @@
+# Wagtail 4.0.2 release notes
+
+_Unreleased_
+
+```{contents}
+---
+local:
+depth: 1
+---
+```
+
+## What's new
+
+### Bug fixes
+
+ * Ensure tag autocompletion dropdown has a solid background (LB (Ben) Johnston)
diff --git a/docs/releases/index.rst b/docs/releases/index.rst
index c9f50ad0f8..6a3b0311b6 100644
--- a/docs/releases/index.rst
+++ b/docs/releases/index.rst
@@ -6,6 +6,7 @@ Release notes
 
    upgrading
    4.1
+   4.0.2
    4.0.1
    4.0
    3.0.3