diff --git a/packages/mongodb-memory-server-core/src/MongoMemoryReplSet.ts b/packages/mongodb-memory-server-core/src/MongoMemoryReplSet.ts
index 345afd4f..797c8a75 100644
--- a/packages/mongodb-memory-server-core/src/MongoMemoryReplSet.ts
+++ b/packages/mongodb-memory-server-core/src/MongoMemoryReplSet.ts
@@ -534,11 +534,6 @@ export class MongoMemoryReplSet extends EventEmitter implements ManagerAdvanced
     /** Default to cleanup temporary, but not custom dbpaths */
     let cleanup: Cleanup = { doCleanup: true, force: false };
 
-    // TODO: for next major release (10.0), this should be removed
-    if (typeof cleanupOptions === 'boolean') {
-      throw new Error('Unsupported argument type: boolean');
-    }
-
     // handle the new way of setting what and how to cleanup
     if (typeof cleanupOptions === 'object') {
       cleanup = cleanupOptions;
@@ -589,11 +584,6 @@ export class MongoMemoryReplSet extends EventEmitter implements ManagerAdvanced
     /** Default to doing cleanup, but not forcing it */
     let cleanup: Cleanup = { doCleanup: true, force: false };
 
-    // TODO: for next major release (10.0), this should be removed
-    if (typeof options === 'boolean') {
-      throw new Error('Unsupported argument type: boolean');
-    }
-
     // handle the new way of setting what and how to cleanup
     if (typeof options === 'object') {
       cleanup = options;
diff --git a/packages/mongodb-memory-server-core/src/MongoMemoryServer.ts b/packages/mongodb-memory-server-core/src/MongoMemoryServer.ts
index 9f9ad7d8..70bdd35d 100644
--- a/packages/mongodb-memory-server-core/src/MongoMemoryServer.ts
+++ b/packages/mongodb-memory-server-core/src/MongoMemoryServer.ts
@@ -550,11 +550,6 @@ export class MongoMemoryServer extends EventEmitter implements ManagerAdvanced {
     /** Default to cleanup temporary, but not custom dbpaths */
     let cleanup: Cleanup = { doCleanup: true, force: false };
 
-    // TODO: for next major release (10.0), this should be removed
-    if (typeof cleanupOptions === 'boolean') {
-      throw new Error('Unsupported argument type: boolean');
-    }
-
     // handle the new way of setting what and how to cleanup
     if (typeof cleanupOptions === 'object') {
       cleanup = cleanupOptions;
@@ -598,11 +593,6 @@ export class MongoMemoryServer extends EventEmitter implements ManagerAdvanced {
     /** Default to doing cleanup, but not forcing it */
     let cleanup: Cleanup = { doCleanup: true, force: false };
 
-    // TODO: for next major release (10.0), this should be removed
-    if (typeof options === 'boolean') {
-      throw new Error('Unsupported argument type: boolean');
-    }
-
     // handle the new way of setting what and how to cleanup
     if (typeof options === 'object') {
       cleanup = options;
diff --git a/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryReplSet.test.ts b/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryReplSet.test.ts
index a4d7cbee..ccd52218 100644
--- a/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryReplSet.test.ts
+++ b/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryReplSet.test.ts
@@ -590,22 +590,6 @@ describe('MongoMemoryReplSet', () => {
       } as utils.Cleanup);
     });
 
-    it('should not support boolean arguments', async () => {
-      const replSet = new MongoMemoryReplSet();
-
-      try {
-        await replSet.stop(
-          // @ts-expect-error Testing a non-existing overload
-          true
-        );
-        fail('Expected to fail');
-      } catch (err) {
-        expect(err).toBeInstanceOf(Error);
-        assertIsError(err);
-        expect(err.message).toMatchSnapshot();
-      }
-    });
-
     it('should call cleanup and pass-through cleanup options', async () => {
       const replSet = await MongoMemoryReplSet.create({ replSet: { count: 1 } });
 
@@ -676,22 +660,6 @@ describe('MongoMemoryReplSet', () => {
       } as utils.Cleanup);
     });
 
-    it('should not support boolean arguments', async () => {
-      const replSet = new MongoMemoryReplSet();
-
-      try {
-        await replSet.cleanup(
-          // @ts-expect-error Testing a non-existing overload
-          true
-        );
-        fail('Expected to fail');
-      } catch (err) {
-        expect(err).toBeInstanceOf(Error);
-        assertIsError(err);
-        expect(err.message).toMatchSnapshot();
-      }
-    });
-
     it('should run cleanup with cleanup options and pass-through options to lower', async () => {
       const replSet = await MongoMemoryReplSet.create({ replSet: { count: 1 } });
 
diff --git a/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryServer.test.ts b/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryServer.test.ts
index 22266ed2..f811acaf 100644
--- a/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryServer.test.ts
+++ b/packages/mongodb-memory-server-core/src/__tests__/MongoMemoryServer.test.ts
@@ -628,22 +628,6 @@ describe('MongoMemoryServer', () => {
       expect(cleanupSpy).toHaveBeenCalledWith({ doCleanup: true } as utils.Cleanup);
     });
 
-    it('should not support boolean arguments', async () => {
-      const mongoServer = new MongoMemoryServer();
-
-      try {
-        await mongoServer.stop(
-          // @ts-expect-error Testing a non-existing overload
-          true
-        );
-        fail('Expected to fail');
-      } catch (err) {
-        expect(err).toBeInstanceOf(Error);
-        assertIsError(err);
-        expect(err.message).toMatchSnapshot();
-      }
-    });
-
     it('should call cleanup and pass-through cleanup options', async () => {
       const mongoServer = new MongoMemoryServer();
 
@@ -796,22 +780,6 @@ describe('MongoMemoryServer', () => {
       expect(mongoServer.instanceInfo).toBeUndefined();
     });
 
-    it('should not support boolean arguments', async () => {
-      const mongoServer = new MongoMemoryServer();
-
-      try {
-        await mongoServer.cleanup(
-          // @ts-expect-error Testing a non-existing overload
-          true
-        );
-        fail('Expected to fail');
-      } catch (err) {
-        expect(err).toBeInstanceOf(Error);
-        assertIsError(err);
-        expect(err.message).toMatchSnapshot();
-      }
-    });
-
     it('should properly cleanup with tmpDir with default no force (new)', async () => {
       const mongoServer = await MongoMemoryServer.create();
       const dbPath = mongoServer.instanceInfo!.dbPath;
diff --git a/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryReplSet.test.ts.snap b/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryReplSet.test.ts.snap
index ee783ed7..1f904390 100644
--- a/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryReplSet.test.ts.snap
+++ b/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryReplSet.test.ts.snap
@@ -2,10 +2,6 @@
 
 exports[`MongoMemoryReplSet "_waitForPrimary" should throw an error if timeout is reached 1`] = `"{\\"timeout\\":1}"`;
 
-exports[`MongoMemoryReplSet .cleanup() should not support boolean arguments 1`] = `"Unsupported argument type: boolean"`;
-
-exports[`MongoMemoryReplSet .stop() should not support boolean arguments 1`] = `"Unsupported argument type: boolean"`;
-
 exports[`MongoMemoryReplSet getters & setters setter of "replSetOpts" should throw an error if count is 1 or above 1`] = `"ReplSet Count needs to be 1 or higher! (specified count: \\"0\\")"`;
 
 exports[`MongoMemoryReplSet getters & setters state errors setter of "binaryOpts" should throw an error if state is not "stopped" 1`] = `
diff --git a/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryServer.test.ts.snap b/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryServer.test.ts.snap
index da3d8328..11c9d82d 100644
--- a/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryServer.test.ts.snap
+++ b/packages/mongodb-memory-server-core/src/__tests__/__snapshots__/MongoMemoryServer.test.ts.snap
@@ -2,12 +2,6 @@
 
 exports[`MongoMemoryServer "createAuth" should throw an error if called without "this.auth" defined 1`] = `"\\"createAuth\\" got called, but \\"this.auth\\" is undefined!"`;
 
-exports[`MongoMemoryServer cleanup() should not support boolean arguments 1`] = `
-"Incorrect State for operation: \\"new\\", allowed States: \\"[stopped]\\"
-This may be because of using a v6.x way of calling functions, look at the following guide if anything applies:
-https://nodkz.github.io/mongodb-memory-server/docs/guides/migration/migrate7#no-function-other-than-start-create-ensureinstance-will-be-starting-anything"
-`;
-
 exports[`MongoMemoryServer cleanup() should throw an error if state is not "stopped" 1`] = `
 "Incorrect State for operation: \\"new\\", allowed States: \\"[stopped]\\"
 This may be because of using a v6.x way of calling functions, look at the following guide if anything applies:
@@ -64,5 +58,3 @@ exports[`MongoMemoryServer start() should throw an error if state is not "new" o
 This may be because of using a v6.x way of calling functions, look at the following guide if anything applies:
 https://nodkz.github.io/mongodb-memory-server/docs/guides/migration/migrate7#no-function-other-than-start-create-ensureinstance-will-be-starting-anything"
 `;
-
-exports[`MongoMemoryServer stop() should not support boolean arguments 1`] = `"Unsupported argument type: boolean"`;