diff --git a/.evergreen/config.yml b/.evergreen/config.yml
index bbf80529f9..1d7e654edc 100644
--- a/.evergreen/config.yml
+++ b/.evergreen/config.yml
@@ -1630,7 +1630,7 @@ tasks:
       - func: bootstrap mongo-orchestration
         vars:
           VERSION: latest
-          TOPOLOGY: server
+          TOPOLOGY: replica_set
       - func: bootstrap kms servers
       - func: run custom csfle tests
   - name: test-latest-server-noauth
diff --git a/.evergreen/generate_evergreen_tasks.js b/.evergreen/generate_evergreen_tasks.js
index 6d6a5e8daa..d7e4543fbf 100644
--- a/.evergreen/generate_evergreen_tasks.js
+++ b/.evergreen/generate_evergreen_tasks.js
@@ -512,7 +512,7 @@ oneOffFuncAsTasks.push({
       func: 'bootstrap mongo-orchestration',
       vars: {
         VERSION: 'latest',
-        TOPOLOGY: 'server'
+        TOPOLOGY: 'replica_set'
       }
     },
     { func: 'bootstrap kms servers' },
diff --git a/src/encrypter.ts b/src/encrypter.ts
index a94153a93f..de654ef126 100644
--- a/src/encrypter.ts
+++ b/src/encrypter.ts
@@ -124,9 +124,15 @@ export class Encrypter {
 
   static checkForMongoCrypt(): void {
     let mongodbClientEncryption = undefined;
+    // Ensure you always wrap an optional require in the try block NODE-3199
     try {
-      // Ensure you always wrap an optional require in the try block NODE-3199
-      mongodbClientEncryption = require('mongodb-client-encryption');
+      // Note (NODE-4254): This is to get around the circular dependency between
+      // mongodb-client-encryption and the driver in the test scenarios.
+      if (process.env.MONGODB_CLIENT_ENCRYPTION_OVERRIDE) {
+        mongodbClientEncryption = require(process.env.MONGODB_CLIENT_ENCRYPTION_OVERRIDE);
+      } else {
+        mongodbClientEncryption = require('mongodb-client-encryption');
+      }
     } catch (err) {
       throw new MongoMissingDependencyError(
         'Auto-encryption requested, but the module is not installed. ' +