diff --git a/package-lock.json b/package-lock.json
index 261df70b9de3d..116595b535364 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17859,6 +17859,7 @@
 				"@wordpress/wordcount": "file:packages/wordcount",
 				"classnames": "^2.3.1",
 				"colord": "^2.9.2",
+				"deepmerge": "^4.3.0",
 				"downloadjs": "^1.4.7",
 				"fast-deep-equal": "^3.1.3",
 				"is-plain-object": "^5.0.0",
@@ -17872,6 +17873,11 @@
 					"version": "2.9.2",
 					"resolved": "https://registry.npmjs.org/colord/-/colord-2.9.2.tgz",
 					"integrity": "sha512-Uqbg+J445nc1TKn4FoDPS6ZZqAvEDnwrH42yo8B40JSOgSLxMZ/gt3h4nmCtPLQeXhjJJkqBx7SCY35WnIixaQ=="
+				},
+				"deepmerge": {
+					"version": "4.3.1",
+					"resolved": "https://registry.npmjs.org/deepmerge/-/deepmerge-4.3.1.tgz",
+					"integrity": "sha512-3sUqbMEc77XqpdNO7FRyRog+eW3ph+GYCbj+rK+uYyRMuwsVy0rMiVtPn+QJlKFvWP/1PYpapqYn0Me2knFn+A=="
 				}
 			}
 		},