diff --git a/libs/dal/src/dal.service.ts b/libs/dal/src/dal.service.ts
index ed1c5bfd6e0..348f02c8e23 100644
--- a/libs/dal/src/dal.service.ts
+++ b/libs/dal/src/dal.service.ts
@@ -1,4 +1,5 @@
 import mongoose, { Connection, ConnectOptions } from 'mongoose';
+import { AuthMechanism } from './types';
 
 export const baseConfig: ConnectOptions = {
   // AUTO_CREATE_INDEXES is deprecated, use MONGO_AUTO_CREATE_INDEXES
@@ -6,6 +7,7 @@ export const baseConfig: ConnectOptions = {
   maxIdleTimeMS: process.env.MONGO_MAX_IDLE_TIME_IN_MS ? Number(process.env.MONGO_MAX_IDLE_TIME_IN_MS) : 1000 * 30,
   maxPoolSize: process.env.MONGO_MAX_POOL_SIZE ? Number(process.env.MONGO_MAX_POOL_SIZE) : 50,
   minPoolSize: process.env.MONGO_MIN_POOL_SIZE ? Number(process.env.MONGO_MIN_POOL_SIZE) : 10,
+  authMechanism: (process.env.MONGO_AUTH_MECHANISM as AuthMechanism) || ('DEFAULT' as AuthMechanism),
 };
 
 export class DalService {
diff --git a/libs/dal/src/types/auth.ts b/libs/dal/src/types/auth.ts
new file mode 100644
index 00000000000..050606a3d52
--- /dev/null
+++ b/libs/dal/src/types/auth.ts
@@ -0,0 +1,8 @@
+export type AuthMechanism =
+  | 'DEFAULT'
+  | 'MONGODB-CR'
+  | 'SCRAM-SHA-1'
+  | 'SCRAM-SHA-256'
+  | 'MONGODB-X509'
+  | 'GSSAPI'
+  | 'PLAIN';
diff --git a/libs/dal/src/types/index.ts b/libs/dal/src/types/index.ts
index e05844d67f1..675e31f3453 100644
--- a/libs/dal/src/types/index.ts
+++ b/libs/dal/src/types/index.ts
@@ -2,3 +2,4 @@ export * from './enforce';
 export * from './helpers';
 export * from './results';
 export * from './error.enum';
+export * from './auth';