diff --git a/dependencies.yaml b/dependencies.yaml
index 6994da25ce1..fa880fefdb8 100644
--- a/dependencies.yaml
+++ b/dependencies.yaml
@@ -195,16 +195,16 @@ dependencies:
 
   # kube-cross
   - name: "registry.k8s.io/build-image/kube-cross (v1.28-go1.21)"
-    version: v1.28.0-go1.21rc2-bullseye.0
+    version: v1.28.0-go1.21rc2-bookworm.0
     refPaths:
     - path: images/build/cross/variants.yaml
       match: "IMAGE_VERSION: 'v((([0-9]+)\\.([0-9]+)\\.([0-9]+)(?:-([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?)(?:\\+([0-9a-zA-Z-]+(?:\\.[0-9a-zA-Z-]+)*))?)'"
 
   - name: "registry.k8s.io/build-image/kube-cross: config variant (v1.28-go1.21)"
-    version: go1.21-bullseye
+    version: go1.21-bookworm
     refPaths:
     - path: images/build/cross/variants.yaml
-      match: "CONFIG: 'go\\d+.\\d+-bullseye'"
+      match: "CONFIG: 'go\\d+.\\d+-bookworm'"
 
   - name: "registry.k8s.io/build-image/kube-cross: image revision (v1.28-go1.21)"
     version: 0
@@ -339,10 +339,10 @@ dependencies:
       match: REVISION:\ '\d+'
 
   - name: "registry.k8s.io/build-image/kube-cross: config variant (next candidate)"
-    version: go1.21-bullseye
+    version: go1.21-bookworm
     refPaths:
     - path: images/build/cross/variants.yaml
-      match: "CONFIG: 'go\\d+.\\d+-bullseye'"
+      match: "CONFIG: 'go\\d+.\\d+-bookworm'"
 
   # Golang (previous release branches: 1.26)
   - name: "golang (previous release branches: 1.26)"
diff --git a/images/build/cross/variants.yaml b/images/build/cross/variants.yaml
index 83df56d8388..89dcbc6300b 100644
--- a/images/build/cross/variants.yaml
+++ b/images/build/cross/variants.yaml
@@ -1,12 +1,12 @@
 variants:
-  v1.28-go1.21-bullseye:
-    CONFIG: 'go1.21-bullseye'
+  v1.28-go1.21-bookworm:
+    CONFIG: 'go1.21-bookworm'
     TYPE: 'default'
-    IMAGE_VERSION: 'v1.28.0-go1.21rc2-bullseye.0'
+    IMAGE_VERSION: 'v1.28.0-go1.21rc2-bookworm.0'
     KUBERNETES_VERSION: 'v1.28.0'
     GO_VERSION: '1.21rc2'
     GO_MAJOR_VERSION: '1.21'
-    OS_CODENAME: 'bullseye'
+    OS_CODENAME: 'bookworm'
     REVISION: '0'
     PROTOBUF_VERSION: '3.19.4'
   v1.27-go1.20-bullseye: