diff --git a/changelog.d/13300.misc b/changelog.d/13300.misc
new file mode 100644
index 000000000000..ee58add3c470
--- /dev/null
+++ b/changelog.d/13300.misc
@@ -0,0 +1 @@
+Up batch size of `bulk_get_push_rules` and `_get_joined_profiles_from_event_ids`.
diff --git a/synapse/storage/databases/main/push_rule.py b/synapse/storage/databases/main/push_rule.py
index 86649c1e6cd6..768f95d16cf0 100644
--- a/synapse/storage/databases/main/push_rule.py
+++ b/synapse/storage/databases/main/push_rule.py
@@ -228,6 +228,7 @@ async def bulk_get_push_rules(
             iterable=user_ids,
             retcols=("*",),
             desc="bulk_get_push_rules",
+            batch_size=1000,
         )
 
         rows.sort(key=lambda row: (-int(row["priority_class"]), -int(row["priority"])))
diff --git a/synapse/storage/databases/main/roommember.py b/synapse/storage/databases/main/roommember.py
index 46ab6232d4c5..df6b82660e69 100644
--- a/synapse/storage/databases/main/roommember.py
+++ b/synapse/storage/databases/main/roommember.py
@@ -904,7 +904,7 @@ async def _get_joined_profiles_from_event_ids(
             iterable=event_ids,
             retcols=("user_id", "display_name", "avatar_url", "event_id"),
             keyvalues={"membership": Membership.JOIN},
-            batch_size=500,
+            batch_size=1000,
             desc="_get_joined_profiles_from_event_ids",
         )