diff --git a/infra/postgres/values.yaml b/infra/postgres/values.yaml
index 3f80b3ad..92b4edde 100644
--- a/infra/postgres/values.yaml
+++ b/infra/postgres/values.yaml
@@ -1,6 +1,6 @@
 image:
   repository: "postgres"
-  tag: "17.9-bookworm"
+  tag: "18.4-bookworm"
 
 upgrade-image:
   repository: "pgautoupgrade/pgautoupgrade"