diff --git a/src/mongo_client.ts b/src/mongo_client.ts
index 6768f7428c..c2c42c0318 100644
--- a/src/mongo_client.ts
+++ b/src/mongo_client.ts
@@ -628,7 +628,7 @@ export class MongoClient extends TypedEventEmitter<MongoClientEvents> implements
             this,
             new RunAdminCommandOperation(
               { endSessions },
-              { readPreference: ReadPreference.primaryPreferred, writeConcern: { w: 0 } }
+              { readPreference: ReadPreference.primaryPreferred, moreToCome: true }
             )
           );
         } catch (error) {
diff --git a/src/operations/run_command.ts b/src/operations/run_command.ts
index 1213f541da..ae24a9a6df 100644
--- a/src/operations/run_command.ts
+++ b/src/operations/run_command.ts
@@ -52,7 +52,7 @@ export class RunAdminCommandOperation<T = Document> extends AbstractOperation<T>
   constructor(
     public command: Document,
     public override options: RunCommandOptions & {
-      writeConcern?: WriteConcern;
+      moreToCome?: boolean;
       bypassPinningCheck?: boolean;
     }
   ) {
@@ -73,8 +73,4 @@ export class RunAdminCommandOperation<T = Document> extends AbstractOperation<T>
     });
     return res;
   }
-}
-
-defineAspects(RunAdminCommandOperation, [
-  Aspect.WRITE_OPERATION
-]);
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/test/integration/collection-management/collection.test.ts b/test/integration/collection-management/collection.test.ts
index 1d9afa37d7..809b4697de 100644
--- a/test/integration/collection-management/collection.test.ts
+++ b/test/integration/collection-management/collection.test.ts
@@ -551,7 +551,7 @@ describe('Collection', function () {
     }
   }
 
-  it.only('isCapped should return false for uncapped collections', async function () {
+  it('isCapped should return false for uncapped collections', async function () {
     await testCapped(configuration, {
       config: configuration,
       collName: 'uncapped',
@@ -559,7 +559,7 @@ describe('Collection', function () {
     });
   });
 
-  it.only('isCapped should return false for collections instantiated without specifying capped', async function () {
+  it('isCapped should return false for collections instantiated without specifying capped', async function () {
     await testCapped(configuration, { config: configuration, collName: 'uncapped2', opts: {} });
   });
 
diff --git a/test/integration/crud/misc_cursors.test.js b/test/integration/crud/misc_cursors.test.js
index e56bbe1d3d..dacad6cc7e 100644
--- a/test/integration/crud/misc_cursors.test.js
+++ b/test/integration/crud/misc_cursors.test.js
@@ -1496,7 +1496,7 @@ describe('Cursor', function () {
     }
   });
 
-  it.only('does not auto destroy streams', function (done) {
+  it('does not auto destroy streams', function (done) {
     const docs = [];
 
     for (var i = 0; i < 10; i++) {
diff --git a/test/integration/read-write-concern/write_concern.test.ts b/test/integration/read-write-concern/write_concern.test.ts
index 96222b82f4..4f1f7df809 100644
--- a/test/integration/read-write-concern/write_concern.test.ts
+++ b/test/integration/read-write-concern/write_concern.test.ts
@@ -15,7 +15,7 @@ import {
 import * as mock from '../../tools/mongodb-mock/index';
 import { filterForCommands } from '../shared';
 
-describe.only('Write Concern', function () {
+describe('Write Concern', function () {
   context('when the WriteConcern is set in the uri', function () {
     let client;
     const events: CommandStartedEvent[] = [];
@@ -173,7 +173,7 @@ describe.only('Write Concern', function () {
     });
   });
 
-  describe('fire-and-forget protocol', function () {
+  describe.only('fire-and-forget protocol', function () {
     context('when writeConcern = 0 and OP_MSG is used', function () {
       const writeOperations: { name: string; command: any; expectedReturnVal: any }[] = [
         {
diff --git a/test/unit/cmap/connection.test.ts b/test/unit/cmap/connection.test.ts
index 993e248786..616b937225 100644
--- a/test/unit/cmap/connection.test.ts
+++ b/test/unit/cmap/connection.test.ts
@@ -28,7 +28,7 @@ describe('new Connection()', function () {
 
   before(() => mock.createServer().then(s => (server = s)));
 
-  it('supports fire-and-forget messages', async function () {
+  it.only('supports fire-and-forget messages', async function () {
     server.setMessageHandler(request => {
       const doc = request.document;
       if (isHello(doc)) {
@@ -47,7 +47,7 @@ describe('new Connection()', function () {
 
     const conn = await connect(options);
     const readSpy = sinon.spy(conn, 'readMany');
-    await conn.command(ns('$admin.cmd'), { ping: 1 }, { writeConcern: { w: 0 } });
+    await conn.command(ns('$admin.cmd'), { ping: 1 }, { moreToCome: true });
     expect(readSpy).to.not.have.been.called;
   });
 
diff --git a/test/unit/collection.test.ts b/test/unit/collection.test.ts
index b050e69dc9..a6f40e7783 100644
--- a/test/unit/collection.test.ts
+++ b/test/unit/collection.test.ts
@@ -15,7 +15,7 @@ describe('Collection', function () {
   });
 
   context('#createIndex', () => {
-    it('should error when createIndex fails', function (done) {
+    it.only('should error when createIndex fails', function (done) {
       const ERROR_RESPONSE = {
         ok: 0,
         errmsg: