diff --git a/servers/legion/apps/postgres.yaml b/servers/legion/apps/postgres.yaml
index 04ed5fd..4885e02 100644
--- a/servers/legion/apps/postgres.yaml
+++ b/servers/legion/apps/postgres.yaml
@@ -9,7 +9,7 @@ spec:
     # Helm chart from Docker Hub OCI registry
     - repoURL: registry-1.docker.io/bitnamicharts
       chart: postgresql
-      targetRevision: ">=16.0.0, <17.0.0"
+      targetRevision: ">=18.0.0, <19.0.0"
       helm:
         values: |
           auth: