diff --git a/automation/build/debian/unstable-arm64v8-arm32-gcc.dockerfile b/automation/build/debian/bookworm-arm64v8-arm32-gcc.dockerfile
similarity index 94%
rename from automation/build/debian/unstable-arm64v8-arm32-gcc.dockerfile
rename to automation/build/debian/bookworm-arm64v8-arm32-gcc.dockerfile
index 11860425a6..b3295c435e 100644
--- a/automation/build/debian/unstable-arm64v8-arm32-gcc.dockerfile
+++ b/automation/build/debian/bookworm-arm64v8-arm32-gcc.dockerfile
@@ -1,4 +1,4 @@
-FROM arm64v8/debian:unstable
+FROM arm64v8/debian:bookworm
 LABEL maintainer.name="The Xen Project" \
       maintainer.email="xen-devel@lists.xenproject.org"
 
diff --git a/automation/build/debian/unstable-arm64v8.dockerfile b/automation/build/debian/bookworm-arm64v8.dockerfile
similarity index 97%
rename from automation/build/debian/unstable-arm64v8.dockerfile
rename to automation/build/debian/bookworm-arm64v8.dockerfile
index 5c73458d9d..aa5566504d 100644
--- a/automation/build/debian/unstable-arm64v8.dockerfile
+++ b/automation/build/debian/bookworm-arm64v8.dockerfile
@@ -1,4 +1,4 @@
-FROM arm64v8/debian:unstable
+FROM arm64v8/debian:bookworm
 LABEL maintainer.name="The Xen Project" \
       maintainer.email="xen-devel@lists.xenproject.org"
 
diff --git a/automation/build/debian/unstable-i386.dockerfile b/automation/build/debian/bookworm-i386.dockerfile
similarity index 97%
rename from automation/build/debian/unstable-i386.dockerfile
rename to automation/build/debian/bookworm-i386.dockerfile
index 6ce54a481b..f663f0ef48 100644
--- a/automation/build/debian/unstable-i386.dockerfile
+++ b/automation/build/debian/bookworm-i386.dockerfile
@@ -1,4 +1,4 @@
-FROM i386/debian:unstable
+FROM i386/debian:bookworm
 LABEL maintainer.name="The Xen Project" \
       maintainer.email="xen-devel@lists.xenproject.org"
 
diff --git a/automation/build/debian/unstable.dockerfile b/automation/build/debian/bookworm.dockerfile
similarity index 98%
rename from automation/build/debian/unstable.dockerfile
rename to automation/build/debian/bookworm.dockerfile
index b560337b7a..9f0c180b74 100644
--- a/automation/build/debian/unstable.dockerfile
+++ b/automation/build/debian/bookworm.dockerfile
@@ -1,4 +1,4 @@
-FROM debian:unstable
+FROM debian:bookworm
 LABEL maintainer.name="The Xen Project" \
       maintainer.email="xen-devel@lists.xenproject.org"
 
diff --git a/automation/scripts/containerize b/automation/scripts/containerize
index 9d4beca4fa..bb0f150ef2 100755
--- a/automation/scripts/containerize
+++ b/automation/scripts/containerize
@@ -34,7 +34,7 @@ case "_${CONTAINER}" in
     _jessie) CONTAINER="${BASE}/debian:jessie" ;;
     _stretch|_) CONTAINER="${BASE}/debian:stretch" ;;
     _buster-gcc-ibt) CONTAINER="${BASE}/debian:buster-gcc-ibt" ;;
-    _unstable|_) CONTAINER="${BASE}/debian:unstable" ;;
+    _bookworm|_) CONTAINER="${BASE}/debian:bookworm" ;;
     _trusty) CONTAINER="${BASE}/ubuntu:trusty" ;;
     _xenial) CONTAINER="${BASE}/ubuntu:xenial" ;;
     _opensuse-leap|_leap) CONTAINER="${BASE}/suse:opensuse-leap" ;;