diff --git a/tdrs-backend/apt.yml b/tdrs-backend/apt.yml
index 07229ce48..f07aee4a3 100644
--- a/tdrs-backend/apt.yml
+++ b/tdrs-backend/apt.yml
@@ -2,7 +2,7 @@ cleancache: true
 keys:
   - https://www.postgresql.org/media/keys/ACCC4CF8.asc
 repos:
-  - deb http://apt.postgresql.org/pub/repos/apt/ bionic-pgdg main
+  - deb http://apt.postgresql.org/pub/repos/apt/ bookworm-pgdg main
 packages:
   - postgresql-client-12
   - libjemalloc-dev