diff --git a/apify-api/openapi/components/schemas/request-queues/GetHeadAndLockResponse.yaml b/apify-api/openapi/components/schemas/request-queues/GetHeadAndLockResponse.yaml
index e9d49616e..8c458e33d 100644
--- a/apify-api/openapi/components/schemas/request-queues/GetHeadAndLockResponse.yaml
+++ b/apify-api/openapi/components/schemas/request-queues/GetHeadAndLockResponse.yaml
@@ -11,7 +11,15 @@ properties:
         example: 1000
       queueModifiedAt:
         type: string
+        description: The modifiedAt is updated whenever the queue is modified. Modifications include adding, updating, or removing requests, as well as locking or unlocking requests in the queue.
         example: '2018-03-14T23:00:00.000Z'
+      queueHasLockedRequests:
+        type: boolean
+        description: Whether the queue contains requests locked by any client (either the one calling the endpoint or a different one).
+        example: true
+      clientKey:
+        type: string
+        example: client-one
       hadMultipleClients:
         type: boolean
         example: true
diff --git a/apify-api/openapi/components/schemas/request-queues/RequestQueue.yaml b/apify-api/openapi/components/schemas/request-queues/RequestQueue.yaml
index ce6249b05..9e293eb2e 100644
--- a/apify-api/openapi/components/schemas/request-queues/RequestQueue.yaml
+++ b/apify-api/openapi/components/schemas/request-queues/RequestQueue.yaml
@@ -25,7 +25,8 @@ properties:
     example: '2019-12-12T07:34:14.202Z'
   modifiedAt:
     type: string
-    example: '2019-12-13T08:36:13.202Z'
+    description: The modifiedAt is updated whenever the queue is modified. Modifications include adding, updating, or removing requests, as well as locking or unlocking requests in the queue.
+    example: '2030-12-13T08:36:13.202Z'
   accessedAt:
     type: string
     example: '2019-12-14T08:36:13.202Z'
diff --git a/apify-api/openapi/paths/request-queues/request-queues@{queueId}@head@lock.yaml b/apify-api/openapi/paths/request-queues/request-queues@{queueId}@head@lock.yaml
index 8ec2ae40c..e5ea3ccb8 100644
--- a/apify-api/openapi/paths/request-queues/request-queues@{queueId}@head@lock.yaml
+++ b/apify-api/openapi/paths/request-queues/request-queues@{queueId}@head@lock.yaml
@@ -6,10 +6,9 @@ post:
     Returns the given number of first requests from the queue and locks them for
     the given time.
 
-    If this endpoint locks the request, no other client will be able to get and
+    If this endpoint locks the request, no other client or run will be able to get and
     lock these requests.
 
-
     The response contains the `hadMultipleClients` boolean field which indicates
     that the queue was accessed by more than one client (with unique or empty
     `clientKey`).
diff --git a/apify-api/openapi/paths/request-queues/request-queues@{queueId}@requests@{requestId}@lock.yaml b/apify-api/openapi/paths/request-queues/request-queues@{queueId}@requests@{requestId}@lock.yaml
index 50480fde3..3a533468b 100644
--- a/apify-api/openapi/paths/request-queues/request-queues@{queueId}@requests@{requestId}@lock.yaml
+++ b/apify-api/openapi/paths/request-queues/request-queues@{queueId}@requests@{requestId}@lock.yaml
@@ -37,11 +37,10 @@ put:
     - name: clientKey
       in: query
       description: |
-        A unique identifier of the client accessing the request queue. It must
-        be a string between 1 and 32 characters long. This identifier is used to
-        ensure one client is not to able delete or prolong
-
-        a request from another client.
+          A unique identifier of the client accessing the request queue. It must
+          be a string between 1 and 32 characters long. This identifier is used to for locking
+          and unlocking requests. You can delete or prolong lock only for requests that were locked by by same
+          client key or from the same Actor run.
       style: form
       explode: true
       schema:
@@ -121,11 +120,10 @@ delete:
     - name: clientKey
       in: query
       description: |
-        A unique identifier of the client accessing the request queue. It must
-        be a string between 1 and 32 characters long. This identifier is used to
-        ensure one client is not to able delete or prolong
-
-        a request from another client.
+          A unique identifier of the client accessing the request queue. It must
+          be a string between 1 and 32 characters long. This identifier is used to for locking
+          and unlocking requests. You can delete or prolong lock only for requests that were locked by by same
+          client key or from the same Actor run.
       style: form
       explode: true
       schema: