diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index b56d4b6011..b60b61fda3 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -7,6 +7,7 @@ Changelog
  * Fix: Ensure that correct sidebar submenus open when labels use non-Latin alphabets (Matt Westcott)
  * Fix: Fix issue where invalid bulk action URLs would incorrectly trigger a server error (500) instead of a valid not found (404) (Ihor Marhitych)
  * Fix: Fix issue where bulk actions would not work for object IDs greater than 999 when `USE_THOUSAND_SEPARATOR` (Dennis McGregor)
+ * Fix: Set cookie for sidebar collapsed state to "SameSite: lax" (LB (Ben Johnston))
 
 
 2.16 (07.02.2022)
diff --git a/docs/releases/2.16.1.rst b/docs/releases/2.16.1.rst
index 508a12e152..777a96c86f 100644
--- a/docs/releases/2.16.1.rst
+++ b/docs/releases/2.16.1.rst
@@ -16,3 +16,4 @@ Bug fixes
  * Ensure that correct sidebar submenus open when labels use non-Latin alphabets (Matt Westcott)
  * Fix issue where invalid bulk action URLs would incorrectly trigger a server error (500) instead of a valid not found (404) (Ihor Marhitych)
  * Fix issue where bulk actions would not work for object IDs greater than 999 when ``USE_THOUSAND_SEPARATOR`` (Dennis McGregor)
+ * Set cookie for sidebar collapsed state to "SameSite: lax" (LB (Ben Johnston))