diff --git a/helpers/package.json b/helpers/package.json
index cd2054d8..26fd0c3a 100644
--- a/helpers/package.json
+++ b/helpers/package.json
@@ -12,6 +12,7 @@
     "url": "git+https://github.com/DavidAnson/markdownlint.git"
   },
   "bugs": "https://github.com/DavidAnson/markdownlint/issues",
+  "funding": "https://github.com/sponsors/DavidAnson",
   "engines": {
     "node": ">=16"
   },
diff --git a/micromark/package.json b/micromark/package.json
index 4e690880..24648acd 100644
--- a/micromark/package.json
+++ b/micromark/package.json
@@ -12,6 +12,7 @@
     "url": "git+https://github.com/DavidAnson/markdownlint.git"
   },
   "bugs": "https://github.com/DavidAnson/markdownlint/issues",
+  "funding": "https://github.com/sponsors/DavidAnson",
   "scripts": {
     "build": "webpack --stats minimal"
   },
diff --git a/package.json b/package.json
index 5c2640af..b73618ce 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "url": "git+https://github.com/DavidAnson/markdownlint.git"
   },
   "bugs": "https://github.com/DavidAnson/markdownlint/issues",
+  "funding": "https://github.com/sponsors/DavidAnson",
   "scripts": {
     "build-config": "npm run build-config-schema && npm run build-config-example",
     "build-config-example": "node schema/build-config-example.js",