diff --git a/.github/workflows/ppa-automation.yaml b/.github/workflows/ppa-automation.yaml
index 8e68fe5597..15485ab9b7 100644
--- a/.github/workflows/ppa-automation.yaml
+++ b/.github/workflows/ppa-automation.yaml
@@ -60,7 +60,7 @@ jobs:
           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_TARGET_DISTS: focal jammy noble
           PPA_URL: ${{ steps.gen-source.outputs.ppa-url }}
         run: |
           mkdir -m700 $GNUPGHOME
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