diff --git a/.projen/tasks.json b/.projen/tasks.json
index b052bb0..48771c9 100644
--- a/.projen/tasks.json
+++ b/.projen/tasks.json
@@ -33,8 +33,7 @@
         "BUMPFILE": "dist/version.txt",
         "RELEASETAG": "dist/releasetag.txt",
         "RELEASE_TAG_PREFIX": "",
-        "BUMP_PACKAGE": "commit-and-tag-version@^12",
-        "NEXT_VERSION_COMMAND": "tsx ./projenrc/next-version.ts"
+        "BUMP_PACKAGE": "commit-and-tag-version@^12"
       },
       "steps": [
         {
@@ -249,7 +248,8 @@
       "name": "release",
       "description": "Prepare a release from \"main\" branch",
       "env": {
-        "RELEASE": "true"
+        "RELEASE": "true",
+        "MIN_MAJOR": "39"
       },
       "steps": [
         {
@@ -300,8 +300,7 @@
         "BUMPFILE": "dist/version.txt",
         "RELEASETAG": "dist/releasetag.txt",
         "RELEASE_TAG_PREFIX": "",
-        "BUMP_PACKAGE": "commit-and-tag-version@^12",
-        "NEXT_VERSION_COMMAND": "tsx ./projenrc/next-version.ts"
+        "BUMP_PACKAGE": "commit-and-tag-version@^12"
       },
       "steps": [
         {
diff --git a/.projenrc.ts b/.projenrc.ts
index 068cf75..a319b62 100644
--- a/.projenrc.ts
+++ b/.projenrc.ts
@@ -3,6 +3,8 @@ import { JsonPatch, cdk } from 'projen';
 import { Stability } from 'projen/lib/cdk';
 import { TrailingComma } from 'projen/lib/javascript';
 
+const SCHEMA_VERSION: typeof import('./schema/version.json') = require('./schema/version.json');
+
 export const project = new cdk.JsiiProject({
   author: 'Amazon Web Services',
   authorAddress: '',
@@ -55,7 +57,8 @@ export const project = new cdk.JsiiProject({
       printWidth: 100,
     },
   },
-  nextVersionCommand: 'tsx ./projenrc/next-version.ts',
+  // This forces every release to be the major version from the data file
+  minMajorVersion: SCHEMA_VERSION.revision,
   eslintOptions: {
     prettier: true,
     dirs: ['lib'],
diff --git a/lib/manifest.ts b/lib/manifest.ts
index 54f2d6c..1101553 100644
--- a/lib/manifest.ts
+++ b/lib/manifest.ts
@@ -22,7 +22,7 @@ import INTEG_SCHEMA = require('../schema/integ.schema.json');
 /**
  * Version is shared for both manifests
  */
-const SCHEMA_VERSION = require('../package.json').version;
+import SCHEMA_VERSION = require('../schema/version.json');
 
 /**
  * Options for the loadManifest operation
@@ -138,7 +138,7 @@ export class Manifest {
    * Fetch the current schema version number.
    */
   public static version(): string {
-    return SCHEMA_VERSION;
+    return `${SCHEMA_VERSION.revision}.0.0`;
   }
 
   /**
diff --git a/projenrc/next-version.ts b/projenrc/next-version.ts
deleted file mode 100644
index 19d535c..0000000
--- a/projenrc/next-version.ts
+++ /dev/null
@@ -1,16 +0,0 @@
-import { schemasChanged } from './update-schema';
-
-/**
- * If any of the schema files changed, we need to bump the major version
- */
-async function main() {
-  const latestTag = process.env.LATEST_TAG;
-  if (latestTag && schemasChanged(latestTag)) {
-    console.log('major');
-  }
-}
-
-main().catch((error) => {
-  console.error(error);
-  process.exitCode = 1;
-});
diff --git a/projenrc/update.ts b/projenrc/update.ts
index 1616f20..14265ee 100644
--- a/projenrc/update.ts
+++ b/projenrc/update.ts
@@ -1,10 +1,13 @@
 import { SCHEMAS } from './schema-definition';
 import { generateSchema } from './update-schema';
+import { maybeBumpVersion } from './versioning';
 
 function update() {
+  const schemas: Record<string, any> = {};
   for (const s of SCHEMAS) {
-    generateSchema(s);
+    schemas[s] = generateSchema(s);
   }
+  maybeBumpVersion(schemas);
 }
 
 update();
diff --git a/projenrc/versioning.ts b/projenrc/versioning.ts
new file mode 100644
index 0000000..d39d50d
--- /dev/null
+++ b/projenrc/versioning.ts
@@ -0,0 +1,44 @@
+import * as crypto from 'crypto';
+import * as fs from 'fs';
+import * as path from 'path';
+import { SCHEMA_DIR } from './schema-definition';
+
+export function maybeBumpVersion(schemas: Record<string, any>) {
+  const serializedSchema = JSON.stringify(sortJson(schemas), null, 2);
+
+  const versionFile = path.join(SCHEMA_DIR, 'version.json');
+  let current: SchemaVersionFile = JSON.parse(fs.readFileSync(versionFile, 'utf8'));
+  const schemaHash = sha256(serializedSchema);
+
+  if (current.schemaHash !== schemaHash) {
+    current = { schemaHash, revision: current.revision + 1 };
+    console.log(`Schemas changed, bumping version to ${current.revision}`);
+  }
+
+  fs.writeFileSync(versionFile, JSON.stringify(current, null, 2));
+}
+
+function sha256(x: string) {
+  const hash = crypto.createHash('sha256');
+  hash.update(x);
+  return hash.digest('hex');
+}
+
+interface SchemaVersionFile {
+  revision: number;
+  schemaHash: string;
+}
+
+function sortJson<A>(x: A): A {
+  if (Array.isArray(x)) {
+    return x;
+  }
+  if (typeof x === 'object' && x !== null) {
+    const ret: Record<string, any> = {};
+    for (const key of Object.keys(x).sort()) {
+      ret[key] = sortJson((x as any)[key]);
+    }
+    return ret as any;
+  }
+  return x;
+}
diff --git a/schema/version.json b/schema/version.json
new file mode 100644
index 0000000..d0e215b
--- /dev/null
+++ b/schema/version.json
@@ -0,0 +1,4 @@
+{
+  "schemaHash": "f0ccc3212331af8a1c75830878d218fd667e5957063831be3b5bfd803b25f0cc",
+  "revision": 39
+}
\ No newline at end of file