diff --git a/docker/ircbot/Dockerfile b/docker/ircbot/Dockerfile
index 79b89fdb61..9dec8f5750 100644
--- a/docker/ircbot/Dockerfile
+++ b/docker/ircbot/Dockerfile
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM docker.io/opendevorg/python-builder:3.9-bookworm as builder
+FROM docker.io/opendevorg/python-builder:3.11-bookworm as builder
 ARG ZUUL_SIBLINGS=""
 
 RUN apt-get update \
@@ -25,7 +25,7 @@ COPY . /tmp/src
 
 RUN assemble
 
-FROM docker.io/opendevorg/python-base:3.9-bookworm as ircbot
+FROM docker.io/opendevorg/python-base:3.11-bookworm as ircbot
 
 COPY --from=builder /output /output
 
diff --git a/docker/matrix-eavesdrop/Dockerfile b/docker/matrix-eavesdrop/Dockerfile
index fa8fa02d7f..1afe3f3ac3 100644
--- a/docker/matrix-eavesdrop/Dockerfile
+++ b/docker/matrix-eavesdrop/Dockerfile
@@ -13,12 +13,12 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM docker.io/opendevorg/python-builder:3.9-bookworm as builder
+FROM docker.io/opendevorg/python-builder:3.11-bookworm as builder
 
 COPY src /tmp/src
 RUN assemble
 
-FROM docker.io/opendevorg/python-base:3.9-bookworm as eavesdrop
+FROM docker.io/opendevorg/python-base:3.11-bookworm as eavesdrop
 
 COPY --from=builder /output/ /output
 RUN /output/install-from-bindep \
diff --git a/zuul.d/docker-images/eavesdrop.yaml b/zuul.d/docker-images/eavesdrop.yaml
index 25e8cec390..f23d881cf4 100644
--- a/zuul.d/docker-images/eavesdrop.yaml
+++ b/zuul.d/docker-images/eavesdrop.yaml
@@ -4,8 +4,8 @@
     description: Build a matrix-eavesdrop image.
     parent: system-config-build-image
     requires: &matrix-eavesdrop_requires
-      - python-base-3.9-bookworm-container-image
-      - python-builder-3.9-bookworm-container-image
+      - python-base-3.11-bookworm-container-image
+      - python-builder-3.11-bookworm-container-image
     provides: matrix-eavesdrop-container-image
     vars: &matrix-eavesdrop_vars
       docker_images:
diff --git a/zuul.d/docker-images/ircbot.yaml b/zuul.d/docker-images/ircbot.yaml
index a8b9fe329b..49a061ba2c 100644
--- a/zuul.d/docker-images/ircbot.yaml
+++ b/zuul.d/docker-images/ircbot.yaml
@@ -4,8 +4,8 @@
     description: Build a ircbot image.
     parent: system-config-build-image
     requires: &ircbot_requires
-      - python-base-3.9-bookworm-container-image
-      - python-builder-3.9-bookworm-container-image
+      - python-base-3.11-bookworm-container-image
+      - python-builder-3.11-bookworm-container-image
     provides: ircbot-container-image
     required-projects: &ircbot_required_projects
       - opendev/meetbot