diff --git a/.github/workflows/ppa-automation.yaml b/.github/workflows/ppa-automation.yaml
index 8e68fe5597..fac11f3e30 100644
--- a/.github/workflows/ppa-automation.yaml
+++ b/.github/workflows/ppa-automation.yaml
@@ -32,13 +32,29 @@ jobs:
           sudo apt-get update
           sudo apt-get install golang debhelper devscripts dput-ng -y
 
-      - name: Build source bundle
-        id: gen-source
+      - name: Decision
+        id: decision
         shell: bash
         env:
           GITREF: ${{github.ref}}
         run: |
-          ./scripts/linux/script.sh --source --gitref ${GITREF}
+          git clone --depth 1 -b ubuntu/devel git://git.launchpad.net/ubuntu/+source/distro-info-data
+          echo -n "releases=" >> $GITHUB_OUTPUT
+          tail -n+2 distro-info-data/ubuntu.csv | while read -r line; do
+            IFS=',' read -ra data <<< "$line"
+            now=$(date +%s)
+            if [ $(date -d "${data[5]}" +%s) -lt $now ]; then
+              echo "Ignoring release ${data[2]} -> eol ${data[5]}"
+              continue # Ignore EOL releases
+            fi
+            if [ $(date -d "${data[4]}" +%s) -gt $((now + 5184000)) ]; then
+              echo "Ignoring release ${data[2]} -> unreleased ${data[4]}"
+              continue # Ignore releases more than 60 days in the future
+            fi
+            echo "Targeting release ${data[2]}"
+            echo -n "${data[2]} " >> $GITHUB_OUTPUT
+          done
+          echo "" >> $GITHUB_OUTPUT
 
           if [[ "$GITREF" == "refs/heads/main" ]]; then
             echo "ppa-url=ppa:okirby/mozilla-vpn-nightly" >> $GITHUB_OUTPUT
@@ -50,18 +66,23 @@ jobs:
             echo "submit-changes=true" >> $GITHUB_OUTPUT
           fi
 
+      - name: Build source bundle
+        id: gen-source
+        shell: bash
+        run: ./scripts/linux/script.sh --source --gitref ${{github.ref}}
+
       - name: Push to Launchpad PPA
         shell: bash
         working-directory: .tmp
-        if: ${{ steps.gen-source.outputs.submit-changes == 'true' }}
+        if: ${{ steps.decision.outputs.submit-changes == 'true' }}
         env:
           DEBEMAIL: ${{ github.actor }}@users.noreply.github.com
           DEBFULLNAME: ${{ github.actor }}
           GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
           GPG_PASSWORD: ${{ secrets.GPG_PASSWORD }}
           GNUPGHOME: ${{ runner.temp }}/gnupg-data
-          PPA_TARGET_DISTS: focal jammy mantic noble
-          PPA_URL: ${{ steps.gen-source.outputs.ppa-url }}
+          PPA_TARGET_DISTS: ${{ steps.decision.outputs.releases }}
+          PPA_URL: ${{ steps.decision.outputs.ppa-url }}
         run: |
           mkdir -m700 $GNUPGHOME
           echo "allow-preset-passphrase" > $GNUPGHOME/gpg-agent.conf
diff --git a/taskcluster/kinds/build/linux.yml b/taskcluster/kinds/build/linux.yml
index 682ce3e73d..8c69905fff 100644
--- a/taskcluster/kinds/build/linux.yml
+++ b/taskcluster/kinds/build/linux.yml
@@ -45,16 +45,6 @@ linux/jammy:
         name: linux-jammy
         type: build
 
-linux/mantic:
-    description: "Linux Build (Ubuntu/Mantic)"
-    treeherder:
-        platform: linux/mantic
-    worker:
-        docker-image: {in-tree: linux-build-mantic}
-    add-index-routes:
-        name: linux-mantic
-        type: build
-
 linux/noble:
     description: "Linux Build (Ubuntu/Noble)"
     treeherder:
diff --git a/taskcluster/kinds/docker-image/kind.yml b/taskcluster/kinds/docker-image/kind.yml
index f42c6a6189..cc74a1746c 100644
--- a/taskcluster/kinds/docker-image/kind.yml
+++ b/taskcluster/kinds/docker-image/kind.yml
@@ -55,11 +55,6 @@ tasks:
         definition: linux-dpkg-build
         args:
             DOCKER_BASE_IMAGE: ubuntu:jammy
-    linux-build-mantic:
-        symbol: I(linux-mantic)
-        definition: linux-dpkg-build
-        args:
-            DOCKER_BASE_IMAGE: ubuntu:mantic
     linux-build-noble:
         symbol: I(linux-noble)
         definition: linux-dpkg-build