diff --git a/pkl-eval/package.json b/pkl-eval/package.json
index 25b3917..27483a2 100644
--- a/pkl-eval/package.json
+++ b/pkl-eval/package.json
@@ -3,6 +3,7 @@
   "description": "A library wrapper for the Pkl CLI",
   "version": "0.0.3",
   "main": "lib/index.js",
+  "types": "lib/index.d.ts",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/pkl-community/node-packages.git"
diff --git a/pkl/package.json b/pkl/package.json
index 9feb86b..9ee5f88 100644
--- a/pkl/package.json
+++ b/pkl/package.json
@@ -4,6 +4,7 @@
   "version": "0.25.1",
   "bin": "lib/main.js",
   "main": "lib/index.js",
+  "types": "lib/index.d.ts",
   "repository": {
     "type": "git",
     "url": "git+https://github.com/pkl-community/node-packages.git"