diff --git a/README.md b/README.md
index 0faf936..8d97cfb 100644
--- a/README.md
+++ b/README.md
@@ -7,3 +7,11 @@ It contains:
 - `example` directory: exemplary VC for each assertion type
 - `packages/schema` directory: JSONSchema for each assertion type
 - `packages/validator` directory: Utility to validate schemas from a VC string.
+
+## Contributing
+
+1. Locate the schema you want to update on `packages/schema`. You can tell it from the VC's `credentialSchema.id` value.
+1. Follow the versioning described in `packages/schema`'s README to name the new version.
+1. The README describes how to generate the schemas from its model too.
+1. Update the CHANGELOG.
+1. Publish the pull request.
diff --git a/dist/schemas/24-platform-user/1-1-1.json b/dist/schemas/24-platform-user/1-1-1.json
index 02f3fbf..a3e15c8 100644
--- a/dist/schemas/24-platform-user/1-1-1.json
+++ b/dist/schemas/24-platform-user/1-1-1.json
@@ -1,6 +1,6 @@
 {
   "$schema": "http://json-schema.org/draft-07/schema#",
-  "$id": "https://raw.githubusercontent.com/litentry/vc-jsonschema/main/dist/schemas/24-platform-user/1-1-0.json",
+  "$id": "https://raw.githubusercontent.com/litentry/vc-jsonschema/main/dist/schemas/24-platform-user/1-1-1.json",
   "title": "Platform user",
   "description": "You are a user of a certain platform",
   "type": "object",
diff --git a/dist/schemas/24-platform-user/latest.json b/dist/schemas/24-platform-user/latest.json
index 854654e..2e051d7 120000
--- a/dist/schemas/24-platform-user/latest.json
+++ b/dist/schemas/24-platform-user/latest.json
@@ -1 +1 @@
-1-1-1.json
\ No newline at end of file
+1-1-0.json
\ No newline at end of file
diff --git a/packages/schemas/CHANGELOG.md b/packages/schemas/CHANGELOG.md
index 2e3d27f..a01c5fa 100644
--- a/packages/schemas/CHANGELOG.md
+++ b/packages/schemas/CHANGELOG.md
@@ -9,6 +9,12 @@ and this project follows [Schema Versioning](https://docs.snowplow.io/docs/pipel
 
 -
 
+## 2024-05-10
+
+(ADDITION) [`24-platform-user`](./src/lib/24-platform-user/) bumped to 1-1-s1
+
+- Support `MagicCraft` platform.
+
 ## 2024-04-30
 
 (REVISION) [`25-token-holding-amount`](./src/lib/25-token-holding-amount/) bumped to 1-1-0
@@ -23,6 +29,12 @@ and this project follows [Schema Versioning](https://docs.snowplow.io/docs/pipel
 
 (MODEL) [`25-token-holding-amount`](./src/lib/25-token-holding-amount/) initial to 1-0-0
 
+## 2024-04-25
+
+(ADDITION) [`21-evm-holding-amount`](./src/lib/21-evm-holding-amount/) bumped to 1-1-1
+
+- Support `MCRT` token.
+
 ## 2024-04-02
 
 (ADDITION) Schema [`21-evm-holding-amount`](./src//lib/21-evm-holding-amount/) bumped to 1-1-1
diff --git a/packages/schemas/src/lib/24-platform-user/1-1-1.ts b/packages/schemas/src/lib/24-platform-user/1-1-1.ts
new file mode 100644
index 0000000..61b9f74
--- /dev/null
+++ b/packages/schemas/src/lib/24-platform-user/1-1-1.ts
@@ -0,0 +1,37 @@
+import { JSONSchema7 } from 'json-schema';
+
+import { schema as base } from '../0-base/1-1-0';
+import { resolveGitHubPath } from '../helpers';
+import { credentialSubject, assertion } from '../schema-helpers';
+
+const supportedPlatforms = [
+  // https://github.com/litentry/litentry-parachain/blob/dev/tee-worker/litentry/core/credentials-v2/src/platform_user/mod.rs
+  'KaratDao',
+  'MagicCraft',
+];
+
+export const schema: JSONSchema7 = {
+  ...base,
+
+  $id: resolveGitHubPath('24-platform-user/1-1-1.json'),
+
+  title: 'Platform user',
+  description: 'You are a user of a certain platform',
+
+  properties: {
+    ...base.properties,
+
+    credentialSubject: credentialSubject({
+      title: 'Credential Subject of Platform user',
+      assertions: assertion.and({
+        items: [
+          assertion.clause({
+            src: ['$platform'],
+            op: ['=='],
+            dst: supportedPlatforms,
+          }),
+        ],
+      }),
+    }),
+  },
+};