diff --git a/openedx/core/djangoapps/content/search/api.py b/openedx/core/djangoapps/content/search/api.py
index 4262b8a7b1..f59b9de371 100644
--- a/openedx/core/djangoapps/content/search/api.py
+++ b/openedx/core/djangoapps/content/search/api.py
@@ -323,6 +323,7 @@ def rebuild_index(status_cb: Callable[[str], None] | None = None) -> None:
             Fields.type,
             Fields.access_id,
             Fields.last_published,
+            Fields.content + "." + Fields.problem_types,
         ])
         # Mark which attributes are used for keyword search, in order of importance:
         client.index(temp_index_name).update_searchable_attributes([
diff --git a/openedx/core/djangoapps/content/search/documents.py b/openedx/core/djangoapps/content/search/documents.py
index 032023f97c..57720e54d0 100644
--- a/openedx/core/djangoapps/content/search/documents.py
+++ b/openedx/core/djangoapps/content/search/documents.py
@@ -31,6 +31,7 @@ class Fields:
     created = "created"
     last_published = "last_published"
     block_type = "block_type"
+    problem_types = "problem_types"
     context_key = "context_key"
     org = "org"
     access_id = "access_id"  # .models.SearchAccess.id