diff --git a/driver-mongodb/src/main/resources/activities/mongodb-crud-basic.yaml b/driver-mongodb/src/main/resources/activities/mongodb-crud-basic.yaml
index de7196042..c3de4b6d7 100644
--- a/driver-mongodb/src/main/resources/activities/mongodb-crud-basic.yaml
+++ b/driver-mongodb/src/main/resources/activities/mongodb-crud-basic.yaml
@@ -82,6 +82,7 @@ blocks:
       - write-document: |
           {
             insert: "<<collection:crud_basic>>",
+            writeConcern: { w: "majority" },
             documents: [
               {
                 "_id":          "{seq_key}",
@@ -133,6 +134,7 @@ blocks:
       - update-document: |
           {
             update: "<<collection:crud_basic>>",
+            writeConcern: { w: "majority" },
             updates: [
               {
                 q: { _id: "{random_key}" },
diff --git a/driver-mongodb/src/main/resources/activities/mongodb-crud-dataset.yaml b/driver-mongodb/src/main/resources/activities/mongodb-crud-dataset.yaml
index 5bef53850..1aa3d9319 100644
--- a/driver-mongodb/src/main/resources/activities/mongodb-crud-dataset.yaml
+++ b/driver-mongodb/src/main/resources/activities/mongodb-crud-dataset.yaml
@@ -57,6 +57,7 @@ blocks:
       - write-document: |
           {
             insert: "<<collection:crud_dataset>>",
+            writeConcern: { w: "majority" },
             documents: [ { "_id": "{seq_key}", {document_json_without_id} ]
           }
         tags:
@@ -85,6 +86,7 @@ blocks:
       - update-document: |
           {
             update: "<<collection:crud_dataset>>",
+            writeConcern: { w: "majority" },
             updates: [
               {
                 q: { _id: "{random_key}" },