diff --git a/package.json b/package.json
index d473d6f160..4e4b940db4 100644
--- a/package.json
+++ b/package.json
@@ -102,14 +102,14 @@
 	"scripts": {
 		"prepare": "run-s build && check-export-map",
 		"build": "npm-run-all --parallel build:*",
-		"build:core": "microbundle build --raw --no-generateTypes",
-		"build:core-min": "microbundle build --raw --no-generateTypes -f iife src/cjs.js -o dist/preact.min.js",
-		"build:debug": "microbundle build --raw --no-generateTypes --cwd debug",
-		"build:devtools": "microbundle build --raw --no-generateTypes --cwd devtools",
-		"build:hooks": "microbundle build --raw --no-generateTypes --cwd hooks",
-		"build:test-utils": "microbundle build --raw --no-generateTypes --cwd test-utils",
-		"build:compat": "microbundle build src/index.js src/scheduler.js --raw --no-generateTypes --cwd compat --globals 'preact/hooks=preactHooks'",
-		"build:jsx": "microbundle build --raw --no-generateTypes --cwd jsx-runtime",
+		"build:core": "microbundle build --raw --no-generateTypes -f cjs,esm,umd",
+		"build:core-min": "microbundle build --raw --no-generateTypes -f cjs,esm,umd,iife src/cjs.js -o dist/preact.min.js",
+		"build:debug": "microbundle build --raw --no-generateTypes -f cjs,esm,umd --cwd debug",
+		"build:devtools": "microbundle build --raw --no-generateTypes -f cjs,esm,umd --cwd devtools",
+		"build:hooks": "microbundle build --raw --no-generateTypes -f cjs,esm,umd --cwd hooks",
+		"build:test-utils": "microbundle build --raw --no-generateTypes -f cjs,esm,umd --cwd test-utils",
+		"build:compat": "microbundle build src/index.js src/scheduler.js --raw --no-generateTypes -f cjs,esm,umd --cwd compat --globals 'preact/hooks=preactHooks'",
+		"build:jsx": "microbundle build --raw --no-generateTypes -f cjs,esm,umd --cwd jsx-runtime",
 		"postbuild": "node ./config/node-13-exports.js && node ./config/compat-entries.js",
 		"dev": "microbundle watch --raw --no-generateTypes --format cjs",
 		"dev:hooks": "microbundle watch --raw --no-generateTypes --format cjs --cwd hooks",