diff --git a/openedx_events/content_authoring/data.py b/openedx_events/content_authoring/data.py
index c48a0b5a..e55cc871 100644
--- a/openedx_events/content_authoring/data.py
+++ b/openedx_events/content_authoring/data.py
@@ -203,8 +203,8 @@ class LibraryCollectionData:
 
     Arguments:
         library_key (LibraryLocatorV2): a key that represents a Blockstore-based content library.
-        collection_id (int): an id (pk) that represents a collection associated with the content library.
+        collection_key (str): identifies the collection within the library's learning package
     """
 
     library_key = attr.ib(type=LibraryLocatorV2)
-    collection_id = attr.ib(type=int)
+    collection_key = attr.ib(type=str)
diff --git a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+created+v1_schema.avsc b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+created+v1_schema.avsc
index f42a800f..c32c7546 100644
--- a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+created+v1_schema.avsc
+++ b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+created+v1_schema.avsc
@@ -14,12 +14,12 @@
             "type": "string"
           },
           {
-            "name": "collection_id",
-            "type": "long"
+            "name": "collection_key",
+            "type": "string"
           }
         ]
       }
     }
   ],
   "namespace": "org.openedx.content_authoring.content.library.collection.created.v1"
-}
\ No newline at end of file
+}
diff --git a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+deleted+v1_schema.avsc b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+deleted+v1_schema.avsc
index 0541f58d..13dd59fe 100644
--- a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+deleted+v1_schema.avsc
+++ b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+deleted+v1_schema.avsc
@@ -14,12 +14,12 @@
             "type": "string"
           },
           {
-            "name": "collection_id",
-            "type": "long"
+            "name": "collection_key",
+            "type": "string"
           }
         ]
       }
     }
   ],
   "namespace": "org.openedx.content_authoring.content.library.collection.deleted.v1"
-}
\ No newline at end of file
+}
diff --git a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+updated+v1_schema.avsc b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+updated+v1_schema.avsc
index 074fb7e8..aa09a6c5 100644
--- a/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+updated+v1_schema.avsc
+++ b/openedx_events/event_bus/avro/tests/schemas/org+openedx+content_authoring+content+library+collection+updated+v1_schema.avsc
@@ -14,12 +14,12 @@
             "type": "string"
           },
           {
-            "name": "collection_id",
-            "type": "long"
+            "name": "collection_key",
+            "type": "string"
           }
         ]
       }
     }
   ],
   "namespace": "org.openedx.content_authoring.content.library.collection.updated.v1"
-}
\ No newline at end of file
+}