diff --git a/.github/funding.yml b/.github/funding.yml
deleted file mode 100644
index e9d8f1d..0000000
--- a/.github/funding.yml
+++ /dev/null
@@ -1,4 +0,0 @@
-github: sindresorhus
-open_collective: sindresorhus
-tidelift: npm/serialize-error
-custom: https://sindresorhus.com/donate
diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index d9e3e00..76e78b8 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,8 +13,8 @@ jobs:
           - 16
           - 14
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/setup-node@v3
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm install
diff --git a/package.json b/package.json
index 962a334..2a669e9 100644
--- a/package.json
+++ b/package.json
@@ -12,6 +12,7 @@
 	},
 	"type": "module",
 	"exports": "./index.js",
+	"sideEffects": false,
 	"engines": {
 		"node": ">=14.16"
 	},