diff --git a/eodag/resources/stac_api.yml b/eodag/resources/stac_api.yml
index 8ae1a9b8b..945d8f372 100644
--- a/eodag/resources/stac_api.yml
+++ b/eodag/resources/stac_api.yml
@@ -169,9 +169,13 @@ paths:
       summary: The feature collections in the dataset.
       description: A body of Feature Collections that belong or are used together with additional links. Request may not return the full set of metadata per Feature Collection.
       operationId: getCollections
+      parameters:
+      - $ref: '#/components/parameters/q'
       responses:
         '200':
           $ref: '#/components/responses/Collections'
+        '202':
+          $ref: '#/components/responses/Accepted'
         '500':
           $ref: '#/components/responses/ServerError'
   /collections/{collectionId}:
@@ -1842,6 +1846,12 @@ components:
         text/html:
           schema:
             type: string
+    Accepted:
+      description: The request has been accepted, but the data is not yet ready. Please wait a few minutes before trying again.
+      content:
+        application/json:
+          schema:
+            $ref: '#/components/schemas/exception'
     Collections:
       description: >-
         The feature collections shared by this API.