diff --git a/.npmignore b/.npmignore
index 5178c81c..2c8ff295 100644
--- a/.npmignore
+++ b/.npmignore
@@ -20,3 +20,5 @@ dist
 tsconfig.tsbuildinfo
 /.eslintrc.json
 !.jsii
+*.ts
+!*.d.ts
diff --git a/.projenrc.js b/.projenrc.js
index bbf4ad79..4128eaa5 100644
--- a/.projenrc.js
+++ b/.projenrc.js
@@ -9,6 +9,7 @@ const project = new awscdk.AwsCdkConstructLibrary({
   author: "CDK Monitoring Constructs Team",
   authorAddress: "monitoring-cdk-constructs@amazon.com",
   defaultReleaseBranch: "main",
+  stability: "experimental",
 
   cdkVersion: CDK_VERSION,
   cdkVersionPinning: true,
@@ -91,4 +92,9 @@ project.eslint.addRules({
   "prettier/prettier": "error",
 });
 
+// Don't need to include the TypeScript source files in the tarball; the transpiled JS files and
+// typing files are sufficient.
+project.addPackageIgnore("*.ts");
+project.addPackageIgnore("!*.d.ts");
+
 project.synth();
diff --git a/package.json b/package.json
index 03456bad..121a683c 100644
--- a/package.json
+++ b/package.json
@@ -116,7 +116,7 @@
     }
   },
   "types": "lib/index.d.ts",
-  "stability": "stable",
+  "stability": "experimental",
   "jsii": {
     "outdir": "dist",
     "targets": {