diff --git a/plugins/modules/gcp_cloudscheduler_job.py b/plugins/modules/gcp_cloudscheduler_job.py
index 9cc8588..a6a765c 100644
--- a/plugins/modules/gcp_cloudscheduler_job.py
+++ b/plugins/modules/gcp_cloudscheduler_job.py
@@ -151,6 +151,7 @@ options:
         description:
         - The message payload for PubsubMessage.
         - Pubsub message must contain either non-empty data, or at least one attribute.
+        - A base64-encoded string.
         required: false
         type: str
       attributes:
@@ -470,6 +471,7 @@ pubsubTarget:
       description:
       - The message payload for PubsubMessage.
       - Pubsub message must contain either non-empty data, or at least one attribute.
+      - A base64-encoded string.
       returned: success
       type: str
     attributes:
diff --git a/plugins/modules/gcp_cloudscheduler_job_info.py b/plugins/modules/gcp_cloudscheduler_job_info.py
index a3efada..809dbbe 100644
--- a/plugins/modules/gcp_cloudscheduler_job_info.py
+++ b/plugins/modules/gcp_cloudscheduler_job_info.py
@@ -212,6 +212,7 @@ resources:
           description:
           - The message payload for PubsubMessage.
           - Pubsub message must contain either non-empty data, or at least one attribute.
+          - A base64-encoded string.
           returned: success
           type: str
         attributes: