diff --git a/src/api/specs/WorkflowsAPI.yaml b/src/api/specs/WorkflowsAPI.yaml
index 46097b7b..73dd7d22 100644
--- a/src/api/specs/WorkflowsAPI.yaml
+++ b/src/api/specs/WorkflowsAPI.yaml
@@ -2123,8 +2123,6 @@ components:
         pipeline_run_uuid:
           type: string
           format: uuid
-        acquired:
-          type: boolean
         created_at:
           type: string
         acquired_at:
diff --git a/src/api/src/backend/serializers/PipelineLockAcquisitionResponseSerializer.py b/src/api/src/backend/serializers/PipelineLockAcquisitionResponseSerializer.py
index 92e5b1f1..7fe0516a 100644
--- a/src/api/src/backend/serializers/PipelineLockAcquisitionResponseSerializer.py
+++ b/src/api/src/backend/serializers/PipelineLockAcquisitionResponseSerializer.py
@@ -6,7 +6,7 @@ class PipelineLockAcquisitionResponseSerializer:
     @staticmethod
     def serialize(pipeline_lock, message):
         return {
-            "acquired": pipeline_lock.acquired,
+            "acquired": pipeline_lock.acquired_at != None,
             "message": message,
             "pipeline_lock_uuid": UUIDSerializer.serialize(pipeline_lock.uuid)
         }
\ No newline at end of file
diff --git a/src/api/src/backend/views/PipelineLocks.py b/src/api/src/backend/views/PipelineLocks.py
index 98c65d23..c11cb878 100644
--- a/src/api/src/backend/views/PipelineLocks.py
+++ b/src/api/src/backend/views/PipelineLocks.py
@@ -104,7 +104,7 @@ def post(self, request, group_id, pipeline_id):
 
             # Check to see if the pipeline run associated with the current 
             # pipeline lock attempt is the next in the queue. If so, update the
-            # pipeline lock's 'acquired' property to 'true'
+            # pipeline lock's 'acquired_at' property
             if pipeline_lock.pipeline_run.uuid == competing_runs[0]:
                 acquired_at = timezone.now()
                 pipeline_lock.object.update(acquired_at=acquired_at)