diff --git a/package.json b/package.json
index 7d4ca513bd920..89a8d9d4f5aae 100644
--- a/package.json
+++ b/package.json
@@ -55,8 +55,8 @@
 		"@wordpress/core-data": "2.4.0",
 		"@wordpress/data": "4.6.0",
 		"@wordpress/data-controls": "1.0.0",
-		"@wordpress/edit-post": "3.5.0",
-		"@wordpress/editor": "9.4.0",
+		"@wordpress/edit-post": "4.0.0",
+		"@wordpress/editor": "9.10.0",
 		"@wordpress/element": "2.5.0",
 		"@wordpress/notices": "1.5.0",
 		"@wordpress/nux": "3.4.0",
@@ -153,7 +153,7 @@
 		"percentage-regex": "3.0.0",
 		"phone": "git+https://github.com/Automattic/node-phone.git#v2.4.0-pre-1",
 		"photon": "file:./packages/photon",
-		"postcss-cli": "6.1.2",
+		"postcss-cli": "8.0.0",
 		"prismjs": "1.16.0",
 		"prop-types": "15.7.2",
 		"qrcode.react": "0.9.3",
@@ -177,7 +177,7 @@
 		"refx": "3.1.1",
 		"rememo": "3.0.0",
 		"resize-observer-polyfill": "1.5.1",
-		"rtlcss": "2.4.0",
+		"rtlcss": "3.0.0",
 		"social-logos": "2.1.0",
 		"socket.io-client": "2.2.0",
 		"source-map": "0.7.3",