diff --git a/.github/renovate.json5 b/.github/renovate.json5
index 9615dc076..742acd134 100644
--- a/.github/renovate.json5
+++ b/.github/renovate.json5
@@ -12,7 +12,7 @@
     automerge: true,
     schedule: 'after 5pm on the first day of the month',
   },
-  baseBranches: ['1.15', '1.17', '1.18', '1.19', 'master'],
+  baseBranches: ['1.17', '1.18', '1.19', 'master'],
   'pre-commit': { enabled: true },
   regexManagers: [
     {
diff --git a/.github/workflows/rebuild-115.yaml b/.github/workflows/rebuild-115.yaml
deleted file mode 100644
index 86be19952..000000000
--- a/.github/workflows/rebuild-115.yaml
+++ /dev/null
@@ -1,74 +0,0 @@
-name: Rebuild 1.15
-
-on:
-  schedule:
-    - cron: 30 2 * * *
-
-jobs:
-  rebuild:
-    runs-on: ubuntu-22.04
-    name: Rebuild 1.15
-    timeout-minutes: 20
-
-    strategy:
-      fail-fast: false
-      matrix:
-        branch:
-          - '1.15'
-
-    env:
-      REDIS_URL: redis://localhost:6379
-      PATH: /bin:/usr/bin:/usr/local/bin:/home/runner/.local/bin
-      SUMMON_PROVIDER: /usr/local/bin/gopass
-
-    steps:
-      - run: docker system prune --all --force
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ matrix.branch }}
-
-      - uses: camptocamp/initialise-gopass-summon-action@v2
-        with:
-          ci-gpg-private-key: ${{secrets.CI_GPG_PRIVATE_KEY}}
-          github-gopass-ci-token: ${{secrets.GOPASS_CI_GITHUB_TOKEN}}
-          patterns: pypi docker
-        if: github.repository == 'camptocamp/tilecloud-chain'
-
-      - run: echo "${HOME}/.local/bin" >> ${GITHUB_PATH}
-      - run: python3 -m pip install --user --requirement=ci/requirements.txt
-
-      - name: Checks
-        run: c2cciutils-checks
-
-      - run: touch tilecloud_chain/OpenLayers.js
-
-      - name: Build
-        run: |
-          python setup.py --long-description > PYPI.md
-          docker build --tag=camptocamp/tilecloud-chain:tests --target=tests .
-          docker build --tag=camptocamp/tilecloud-chain .
-          git --no-pager diff --check `git log --oneline | tail -1 | cut --fields=1 --delimiter=' '`
-
-      - name: Test
-        run: |
-          docker-compose up -d
-
-          # Wait for DB to be up
-          while ! docker-compose exec -T test psql -h db -p 5432 -U postgresql -v ON_ERROR_STOP=1 -c "SELECT 1" -d tests
-          do
-            echo "Waiting for DB to be UP"
-            sleep 1
-          done
-
-          # nosetests is for version 1.14
-          docker-compose exec -T test pytest || docker-compose exec -T test python setup.py nosetests --logging-filter=tilecloud,tilecloud_chain --attr '!'nopy3
-
-          docker-compose down
-
-      - run: docker-compose logs
-        if: failure()
-
-      - run: python3 -m pip install --requirement=requirements-publish.txt
-
-      - name: Publish
-        run: c2cciutils-publish --type=rebuild --branch=${{ matrix.branch }}
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 13e92e499..21f017d97 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -22,17 +22,6 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
       - id: mixed-line-ending
-  - repo: https://github.com/mheap/json-schema-spell-checker
-    rev: master
-    hooks:
-      - id: json-schema-spell-checker
-        files: tilecloud_chain/schema.json
-        args:
-          - --fields=description
-          - --ignore-numbers
-          - --ignore-acronyms
-          - --en-us
-          - --spelling=.github/spell-ignore-words.txt
   - repo: https://github.com/pre-commit/mirrors-prettier
     rev: v3.0.3
     hooks:
diff --git a/SECURITY.md b/SECURITY.md
index 5c77ff6d2..150619725 100644
--- a/SECURITY.md
+++ b/SECURITY.md
@@ -4,10 +4,7 @@
 
 | Version | Supported Until |
 | ------- | --------------- |
-| <= 1.13 | Unsupported     |
-| 1.14    | Unsupported     |
-| 1.15    | Best effort     |
-| 1.16    | Unsupported     |
+| <=1.16  | Unsupported     |
 | 1.17    | 23/06/2025      |
 | 1.18    | Best effort     |
 | 1.19    | Best effort     |