diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6c14486d90..dab215cad6 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -54,7 +54,7 @@
 	"components/o3-button": "2.0.0",
 	"components/o3-editorial-typography": "2.0.0",
 	"components/o3-form": "0.3.2",
-	"components/o3-foundation": "2.0.0",
+	"components/o3-foundation": "2.1.0",
 	"components/o3-tooltip": "2.0.0",
 	"libraries/ftdomdelegate": "5.0.1",
 	"libraries/math": "1.1.1",
diff --git a/components/o3-foundation/CHANGELOG.md b/components/o3-foundation/CHANGELOG.md
index 7863f6cff8..acef76095d 100644
--- a/components/o3-foundation/CHANGELOG.md
+++ b/components/o3-foundation/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.1.0](https://github.com/Financial-Times/origami/compare/o3-foundation-v2.0.0...o3-foundation-v2.1.0) (2024-09-27)
+
+
+### Features
+
+* add z-index values to o3 ([#1827](https://github.com/Financial-Times/origami/issues/1827)) ([1f74480](https://github.com/Financial-Times/origami/commit/1f74480dc51dd161657faef6f0384b853115f96c))
+
 ## [2.0.0](https://github.com/Financial-Times/origami/compare/o3-foundation-v1.6.0...o3-foundation-v1.6.1) (2024-09-19)
 
 ### ⚠ BREAKING CHANGES
diff --git a/components/o3-foundation/package.json b/components/o3-foundation/package.json
index 21cb129a4b..fd8de365aa 100644
--- a/components/o3-foundation/package.json
+++ b/components/o3-foundation/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@financial-times/o3-foundation",
-	"version": "2.0.0",
+	"version": "2.1.0",
 	"description": "Origami foundations with design tokens",
 	"keywords": [
 		"foundation",