diff --git a/backport-changelog/6.6/6567.md b/backport-changelog/6.6/6567.md
new file mode 100644
index 0000000000000..8f200bed3b5c0
--- /dev/null
+++ b/backport-changelog/6.6/6567.md
@@ -0,0 +1,4 @@
+https://github.com/WordPress/wordpress-develop/pull/6567
+
+* https://github.com/WordPress/gutenberg/pull/47271
+* https://github.com/WordPress/gutenberg/pull/61774
diff --git a/lib/theme-i18n.json b/lib/theme-i18n.json
index ea6bf7fe6727e..e4d14502132cb 100644
--- a/lib/theme-i18n.json
+++ b/lib/theme-i18n.json
@@ -38,6 +38,13 @@
 				}
 			]
 		},
+		"dimensions": {
+			"aspectRatios": [
+				{
+					"name": "Aspect ratio name"
+				}
+			]
+		},
 		"blocks": {
 			"*": {
 				"typography": {