diff --git a/.github/workflows/build-base-app.yml b/.github/workflows/build-base-app.yml
index 479cd7cadf..dbf43e7d2c 100644
--- a/.github/workflows/build-base-app.yml
+++ b/.github/workflows/build-base-app.yml
@@ -51,6 +51,7 @@ jobs:
         push: true
         tags: |
           ghcr.io/ietf-tools/datatracker-app-base:${{ env.IMGVERSION }}
+          ghcr.io/ietf-tools/datatracker-app-base:py312
           ${{ github.ref == 'refs/heads/main' && 'ghcr.io/ietf-tools/datatracker-app-base:latest' || '' }}
 
     - name: Update version references
diff --git a/.github/workflows/tests-az.yml b/.github/workflows/tests-az.yml
index 8553563a19..d1fe0cdf62 100644
--- a/.github/workflows/tests-az.yml
+++ b/.github/workflows/tests-az.yml
@@ -62,7 +62,7 @@ jobs:
           echo "Starting Containers..."
           sudo docker network create dtnet
           sudo docker run -d --name db --network=dtnet ghcr.io/ietf-tools/datatracker-db:latest &
-          sudo docker run -d --name app --network=dtnet ghcr.io/ietf-tools/datatracker-app-base:latest sleep infinity &
+          sudo docker run -d --name app --network=dtnet ghcr.io/ietf-tools/datatracker-app-base:py312 sleep infinity &
           wait
 
           echo "Cloning datatracker repo..."
diff --git a/dev/celery/Dockerfile b/dev/celery/Dockerfile
index 12eb15eb81..77501218c8 100644
--- a/dev/celery/Dockerfile
+++ b/dev/celery/Dockerfile
@@ -1,6 +1,6 @@
 # Dockerfile for celery worker
 #
-FROM ghcr.io/ietf-tools/datatracker-app-base:latest
+FROM ghcr.io/ietf-tools/datatracker-app-base:py312
 LABEL maintainer="IETF Tools Team <tools-discuss@ietf.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/dev/deploy-to-container/cli.js b/dev/deploy-to-container/cli.js
index 4aee7ba1ed..bd89d515fa 100644
--- a/dev/deploy-to-container/cli.js
+++ b/dev/deploy-to-container/cli.js
@@ -84,7 +84,7 @@ async function main () {
   
   // Pull latest Datatracker Base image
   console.info('Pulling latest Datatracker base docker image...')
-  const appImagePullStream = await dock.pull('ghcr.io/ietf-tools/datatracker-app-base:latest')
+  const appImagePullStream = await dock.pull('ghcr.io/ietf-tools/datatracker-app-base:py312')
   await new Promise((resolve, reject) => {
     dock.modem.followProgress(appImagePullStream, (err, res) => err ? reject(err) : resolve(res))
   })
@@ -251,7 +251,7 @@ async function main () {
   // Create Datatracker container
   console.info(`Creating Datatracker docker container... [dt-app-${branch}]`)
   const appContainer = await dock.createContainer({
-    Image: 'ghcr.io/ietf-tools/datatracker-app-base:latest',
+    Image: 'ghcr.io/ietf-tools/datatracker-app-base:py312',
     name: `dt-app-${branch}`,
     Hostname: `dt-app-${branch}`,
     Env: [
diff --git a/dev/diff/cli.js b/dev/diff/cli.js
index 461b0c37a0..0cf353cc65 100644
--- a/dev/diff/cli.js
+++ b/dev/diff/cli.js
@@ -567,7 +567,7 @@ async function main () {
           {
             title: 'Pulling latest Datatracker base docker image...',
             task: async (subctx, subtask) => {
-              const appImagePullStream = await dock.pull('ghcr.io/ietf-tools/datatracker-app-base:latest')
+              const appImagePullStream = await dock.pull('ghcr.io/ietf-tools/datatracker-app-base:py312')
               await new Promise((resolve, reject) => {
                 dock.modem.followProgress(appImagePullStream, (err, res) => err ? reject(err) : resolve(res))
               })
@@ -648,7 +648,7 @@ async function main () {
             title: 'Creating source Datatracker docker container...',
             task: async (subctx, subtask) => {
               containers.appSource = await dock.createContainer({
-                Image: 'ghcr.io/ietf-tools/datatracker-app-base:latest',
+                Image: 'ghcr.io/ietf-tools/datatracker-app-base:py312',
                 name: 'dt-diff-app-source',
                 Tty: true,
                 Hostname: 'appsource',
@@ -664,7 +664,7 @@ async function main () {
             title: 'Creating target Datatracker docker container...',
             task: async (subctx, subtask) => {
               containers.appTarget = await dock.createContainer({
-                Image: 'ghcr.io/ietf-tools/datatracker-app-base:latest',
+                Image: 'ghcr.io/ietf-tools/datatracker-app-base:py312',
                 name: 'dt-diff-app-target',
                 Tty: true,
                 Hostname: 'apptarget',
diff --git a/dev/tests/debug.sh b/dev/tests/debug.sh
index d87c504bb9..e92e6d9b2a 100644
--- a/dev/tests/debug.sh
+++ b/dev/tests/debug.sh
@@ -9,7 +9,7 @@
 # Simply type "exit" + ENTER to exit and shutdown this test environment.
 
 echo "Fetching latest images..."
-docker pull ghcr.io/ietf-tools/datatracker-app-base:latest
+docker pull ghcr.io/ietf-tools/datatracker-app-base:py312
 docker pull ghcr.io/ietf-tools/datatracker-db:latest
 echo "Starting containers..."
 docker compose -f docker-compose.debug.yml -p dtdebug --compatibility up -d
diff --git a/dev/tests/docker-compose.debug.yml b/dev/tests/docker-compose.debug.yml
index 8117b92375..168bbd4e92 100644
--- a/dev/tests/docker-compose.debug.yml
+++ b/dev/tests/docker-compose.debug.yml
@@ -5,7 +5,7 @@ version: '3.8'
 
 services:
     app:
-        image: ghcr.io/ietf-tools/datatracker-app-base:latest
+        image: ghcr.io/ietf-tools/datatracker-app-base:py312
         command: -f /dev/null
         working_dir: /__w/datatracker/datatracker
         entrypoint: tail
diff --git a/docker/app.Dockerfile b/docker/app.Dockerfile
index fee3833733..e3df9bd4b4 100644
--- a/docker/app.Dockerfile
+++ b/docker/app.Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/ietf-tools/datatracker-app-base:latest
+FROM ghcr.io/ietf-tools/datatracker-app-base:py312
 LABEL maintainer="IETF Tools Team <tools-discuss@ietf.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive
diff --git a/docker/celery.Dockerfile b/docker/celery.Dockerfile
index e44200398c..5e9f9c23d6 100644
--- a/docker/celery.Dockerfile
+++ b/docker/celery.Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/ietf-tools/datatracker-celery:latest
+FROM ghcr.io/ietf-tools/datatracker-celery:py312
 LABEL maintainer="IETF Tools Team <tools-discuss@ietf.org>"
 
 ENV DEBIAN_FRONTEND=noninteractive