diff --git a/nowchess/eu-central-1-staging/kustomization.yaml b/nowchess/eu-central-1-staging/kustomization.yaml
index 8e65b32..10e82dd 100644
--- a/nowchess/eu-central-1-staging/kustomization.yaml
+++ b/nowchess/eu-central-1-staging/kustomization.yaml
@@ -49,7 +49,7 @@ images:
 - name: ghcr.io/now-chess/now-chess-systems/coordinator
   newTag: 0.20.0
 - name: ghcr.io/now-chess/now-chess-systems/core
-  newTag: 0.39.0
+  newTag: 0.40.0
 - name: ghcr.io/now-chess/now-chess-systems/frontend
   newTag: 0.2.2
 - name: ghcr.io/now-chess/now-chess-systems/io