diff --git a/src/sscce-sequelize-6.ts b/src/sscce-sequelize-6.ts
deleted file mode 100644
index 132a311d5..000000000
--- a/src/sscce-sequelize-6.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { DataTypes, Model } from 'sequelize';
-import { createSequelize6Instance } from '../dev/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 603cb219c..ec97caf05 100644
--- a/src/sscce-sequelize-7.ts
+++ b/src/sscce-sequelize-7.ts
@@ -1,5 +1,5 @@
 import { CreationOptional, DataTypes, InferAttributes, InferCreationAttributes, Model } from '@sequelize/core';
-import { Attribute, NotNull } from '@sequelize/core/decorators-legacy';
+import { Attribute, PrimaryKey } from '@sequelize/core/decorators-legacy';
 import { createSequelize7Instance } from '../dev/create-sequelize-instance';
 import { expect } from 'chai';
 import sinon from 'sinon';
@@ -23,21 +23,34 @@ export async function run() {
   });
 
   class Foo extends Model<InferAttributes<Foo>, InferCreationAttributes<Foo>> {
-    declare id: CreationOptional<number>;
-
     @Attribute(DataTypes.TEXT)
-    @NotNull
+    @PrimaryKey
     declare name: string;
+
+    @Attribute(DataTypes.TEXT)
+    @PrimaryKey
+    declare rank: string;
+
+    @Attribute(DataTypes.TEXT)
+    declare role: CreationOptional<string>;
   }
 
   sequelize.addModels([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);
+  // Inserting two entries with different name and rank succeeds
+  await expect(Foo.create({ name: "fish", rank: "novice" })).to.eventually.be.fulfilled;
+  await expect(Foo.create({ name: "fish", rank: "expert" })).to.eventually.be.fulfilled;
+
+  // Inserting two entries with same name and rank fails
+  await expect(Foo.create({ name: "cat", rank: "expert" })).to.eventually.be.fulfilled;
+  await expect(Foo.create({ name: "cat", rank: "expert" })).to.eventually.be.rejected;
+
+  // Altering an unrelated column should not change the above behaviour
+  await Foo.truncate();
+  await sequelize.queryInterface.changeColumn("Foos", "role", { type: DataTypes.INTEGER });
+  await expect(Foo.create({ name: "bear", rank: "novice" })).to.eventually.be.fulfilled;
+  await expect(Foo.create({ name: "bear", rank: "expert" })).to.eventually.be.fulfilled;
+  await expect(Foo.create({ name: "dog", rank: "expert" })).to.eventually.be.fulfilled;
+  await expect(Foo.create({ name: "dog", rank: "expert" })).to.eventually.be.rejected;
 }