diff --git a/.gitlab-ci/setup-container.sh b/.gitlab-ci/setup-container.sh
index 7029919c509c..444b870a09d0 100755
--- a/.gitlab-ci/setup-container.sh
+++ b/.gitlab-ci/setup-container.sh
@@ -111,6 +111,7 @@ PKGS_VIRTME_RUNTIME=(
 PKGS_PIP_MIN_VERSIONS=(
 	'meson meson 1.2.0 remove'
 	'python3-pygments pygments 2.10.0 keep'
+	'python3-sphinx-book-theme python3-sphinx-book-theme 0.1.7 remove'
 	'python3-sphinxcontrib.doxylink sphinxcontrib-doxylink 1.6.1 remove'
 )
 
@@ -125,6 +126,8 @@ case $FDO_DISTRIBUTION_VERSION in
 	PKGS_LIBCAMERA_RUNTIME+=( g++-9 )
 	;;
 'bookworm')
+	# Sphinx theme for the documentation.
+	PKGS_LIBCAMERA_RUNTIME+=( python3-sphinx-book-theme )
 	# libclang-rt-dev for the clang ASan runtime.
 	PKGS_LIBCAMERA_RUNTIME_MULTIARCH+=( libclang-rt-dev )
 	# For cam and lc-compliance
@@ -134,6 +137,8 @@ case $FDO_DISTRIBUTION_VERSION in
 'trixie')
 	# gcc 13 to expand compilation testing coverage.
 	PKGS_LIBCAMERA_RUNTIME+=( g++-13 )
+	# Sphinx theme for the documentation.
+	PKGS_LIBCAMERA_RUNTIME+=( python3-sphinx-book-theme )
 	# libclang-rt-dev for the clang ASan runtime.
 	PKGS_LIBCAMERA_RUNTIME_MULTIARCH+=( libclang-rt-dev )
 	;;
diff --git a/gitlab-ci.yml b/gitlab-ci.yml
index 57607dbfe7e4..c8ec345f14d2 100644
--- a/gitlab-ci.yml
+++ b/gitlab-ci.yml
@@ -59,17 +59,17 @@ include:
 .libcamera-ci.debian:11:
   variables:
     FDO_DISTRIBUTION_VERSION: 'bullseye'
-    FDO_DISTRIBUTION_TAG: '2025-07-27.1'
+    FDO_DISTRIBUTION_TAG: '2025-09-08.0'
 
 .libcamera-ci.debian:12:
   variables:
     FDO_DISTRIBUTION_VERSION: 'bookworm'
-    FDO_DISTRIBUTION_TAG: '2025-07-27.1'
+    FDO_DISTRIBUTION_TAG: '2025-09-08.0'
 
 .libcamera-ci.debian:13:
   variables:
     FDO_DISTRIBUTION_VERSION: 'trixie'
-    FDO_DISTRIBUTION_TAG: '2025-07-27.1'
+    FDO_DISTRIBUTION_TAG: '2025-09-08.0'
 
 .container-debian:
   extends: