diff --git a/src/sscce-sequelize-6.ts b/src/sscce-sequelize-6.ts
deleted file mode 100644
index c90761b96..000000000
--- a/src/sscce-sequelize-6.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { DataTypes, Model } from 'sequelize';
-import { createSequelize6Instance } from '../setup/create-sequelize-instance';
-import { expect } from 'chai';
-import sinon from 'sinon';
-
-// if your issue is dialect specific, remove the dialects you don't need to test on.
-export const testingOnDialects = new Set(['mssql', 'sqlite', 'mysql', 'mariadb', 'postgres', 'postgres-native']);
-
-// You can delete this file if you don't want your SSCCE to be tested against Sequelize 6
-
-// Your SSCCE goes inside this function.
-export async function run() {
-  // This function should be used instead of `new Sequelize()`.
-  // It applies the config for your SSCCE to work on CI.
-  const sequelize = createSequelize6Instance({
-    logQueryParameters: true,
-    benchmark: true,
-    define: {
-      // For less clutter in the SSCCE
-      timestamps: false,
-    },
-  });
-
-  class Foo extends Model {}
-
-  Foo.init({
-    name: DataTypes.TEXT,
-  }, {
-    sequelize,
-    modelName: 'Foo',
-  });
-
-  // You can use sinon and chai assertions directly in your SSCCE.
-  const spy = sinon.spy();
-  sequelize.afterBulkSync(() => spy());
-  await sequelize.sync({ force: true });
-  expect(spy).to.have.been.called;
-
-  console.log(await Foo.create({ name: 'TS foo' }));
-  expect(await Foo.count()).to.equal(1);
-}
diff --git a/src/sscce-sequelize-7.ts b/src/sscce-sequelize-7.ts
index 861b9fdea..99dc8db8f 100644
--- a/src/sscce-sequelize-7.ts
+++ b/src/sscce-sequelize-7.ts
@@ -1,4 +1,5 @@
-import { DataTypes, Model } from '@sequelize/core';
+import { DataTypes, Model, InferAttributes, InferCreationAttributes, NonAttribute } from '@sequelize/core';
+import { HasMany, Attribute, Table, PrimaryKey } from "@sequelize/core/decorators-legacy";
 import { createSequelize7Instance } from '../setup/create-sequelize-instance';
 import { expect } from 'chai';
 import sinon from 'sinon';
@@ -10,9 +11,31 @@ export const testingOnDialects = new Set(['mssql', 'sqlite', 'mysql', 'mariadb',
 
 // Your SSCCE goes inside this function.
 export async function run() {
+  @Table({ timestamps: false })
+  class Member extends Model<InferAttributes<Member>, InferCreationAttributes<Member>> {
+    @Attribute(DataTypes.INTEGER)
+    declare userId: number;
+
+    @Attribute(DataTypes.INTEGER)
+    declare treeId: number;
+  }
+
+  @Table({ timestamps: false })
+  class User extends Model<InferAttributes<User>, InferCreationAttributes<User>> {
+    @HasMany(() => Member, "userId")
+    declare members?: NonAttribute<Member[]>;
+  }
+
+  @Table({ timestamps: false })
+  class Tree extends Model<InferAttributes<Tree>, InferCreationAttributes<Tree>> {
+    @HasMany(() => Member, "treeId")
+    declare members?: NonAttribute<Member[]>;
+  }
+
   // This function should be used instead of `new Sequelize()`.
   // It applies the config for your SSCCE to work on CI.
   const sequelize = createSequelize7Instance({
+    models: [Member, User, Tree],
     logQueryParameters: true,
     benchmark: true,
     define: {
@@ -21,21 +44,12 @@ export async function run() {
     },
   });
 
-  class Foo extends Model {}
-
-  Foo.init({
-    name: DataTypes.TEXT,
-  }, {
-    sequelize,
-    modelName: 'Foo',
-  });
 
   // You can use sinon and chai assertions directly in your SSCCE.
+  await sequelize.sync({ force: true });
+
   const spy = sinon.spy();
   sequelize.afterBulkSync(() => spy());
-  await sequelize.sync({ force: true });
+  await sequelize.sync({ alter: true });
   expect(spy).to.have.been.called;
-
-  console.log(await Foo.create({ name: 'TS foo' }));
-  expect(await Foo.count()).to.equal(1);
 }
diff --git a/tsconfig.json b/tsconfig.json
index b17064f0e..74d935c68 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -6,7 +6,8 @@
   "compilerOptions": {
     "target": "es2021",
     "module": "CommonJS",
-    "moduleResolution": "Node",
+    "moduleResolution": "nodenext",
+    "experimentalDecorators": true,
     "esModuleInterop": true,
     "resolveJsonModule": true,
     "newLine": "lf",