diff --git a/changelog.d/11798.bugfix b/changelog.d/11798.bugfix
new file mode 100644
index 0000000000..2651fd11cf
--- /dev/null
+++ b/changelog.d/11798.bugfix
@@ -0,0 +1 @@
+Include a `prev_content` field in state events sent to Application Services. Contributed by @totallynotvaishnav.
\ No newline at end of file
diff --git a/synapse/storage/databases/main/appservice.py b/synapse/storage/databases/main/appservice.py
index 92c95a41d7..2bb5288431 100644
--- a/synapse/storage/databases/main/appservice.py
+++ b/synapse/storage/databases/main/appservice.py
@@ -384,7 +384,7 @@ class ApplicationServiceTransactionWorkerStore(
             "get_new_events_for_appservice", get_new_events_for_appservice_txn
         )
 
-        events = await self.get_events_as_list(event_ids)
+        events = await self.get_events_as_list(event_ids, get_prev_content=True)
 
         return upper_bound, events