diff --git a/.zuul.yaml b/.zuul.yaml
index 5d5c183..d5ec328 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -21,8 +21,8 @@
     allowed-projects: opendev/grafyaml
     timeout: 2700
     requires:
-      - python-builder-3.10-bullseye-container-image
-      - python-base-3.10-bullseye-container-image
+      - python-builder-3.11-bookworm-container-image
+      - python-base-3.11-bookworm-container-image
     provides:
       - grafyaml-container-image
     dependencies:
@@ -40,8 +40,8 @@
     description: Build the grafyaml Docker image and upload to Docker Hub.
     timeout: 3600
     requires:
-      - python-builder-3.10-bullseye-container-image
-      - python-base-3.10-bullseye-container-image
+      - python-builder-3.11-bookworm-container-image
+      - python-base-3.11-bookworm-container-image
     provides: grafyaml-container-image
     vars: *grafyaml_image_vars
     secrets:
@@ -65,7 +65,7 @@
     check:
       jobs:
         - tox-pep8
-        - tox-py310:
+        - tox-py311:
             nodeset: ubuntu-jammy
         - opendev-buildset-registry
         - grafyaml-build-image
@@ -73,7 +73,7 @@
     gate:
       jobs:
         - tox-pep8
-        - tox-py310:
+        - tox-py311:
             nodeset: ubuntu-jammy
         - grafyaml-upload-image
     promote:
diff --git a/Dockerfile b/Dockerfile
index 0e6ae74..50a8142 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,12 +14,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM docker.io/opendevorg/python-builder:3.10-bullseye as builder
+FROM docker.io/opendevorg/python-builder:3.11-bookworm as builder
 
 COPY . /tmp/src
 RUN assemble
 
-FROM docker.io/opendevorg/python-base:3.10-bullseye
+FROM docker.io/opendevorg/python-base:3.11-bookworm
 
 COPY --from=builder /output/ /output
 RUN /output/install-from-bindep
diff --git a/setup.cfg b/setup.cfg
index 700e0bf..f5e86ae 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -16,12 +16,7 @@ classifier =
     Operating System :: OS Independent
     Programming Language :: Python
     Programming Language :: Python :: 3
-    Programming Language :: Python :: 3.3
-    Programming Language :: Python :: 3.5
-    Programming Language :: Python :: 3.6
-    Programming Language :: Python :: 3.7
-    Programming Language :: Python :: 3.8
-    Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     Topic :: Utilities
 
 [files]
diff --git a/tox.ini b/tox.ini
index 92704b1..ec2c84c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 3.1.1
-envlist = docs,pep8,py35,py36,py37,py38
+envlist = docs,pep8,py311
 ignore_basepython_conflict = True
 
 [testenv]