diff --git a/.gitattributes b/.gitattributes
index a3feebc2..e6433892 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -6,7 +6,6 @@
 /.github/pull_request_template.md linguist-generated
 /.github/workflows/build.yml linguist-generated
 /.github/workflows/release.yml linguist-generated
-/.github/workflows/upgrade-master.yml linguist-generated
 /.github/workflows/upgrade-projen-master.yml linguist-generated
 /.gitignore linguist-generated
 /.npmignore linguist-generated
diff --git a/.github/workflows/upgrade-master.yml b/.github/workflows/upgrade-master.yml
deleted file mode 100644
index ea309dac..00000000
--- a/.github/workflows/upgrade-master.yml
+++ /dev/null
@@ -1,90 +0,0 @@
-# ~~ Generated by projen. To modify, edit .projenrc.ts and run "npx projen".
-
-name: upgrade-master
-on:
-  workflow_dispatch: {}
-  schedule:
-    - cron: 0 0 * * 1
-jobs:
-  upgrade:
-    name: Upgrade
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-    outputs:
-      patch_created: ${{ steps.create_patch.outputs.patch_created }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: master
-      - name: Setup Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: 18.x
-      - name: Install dependencies
-        run: yarn install --check-files --frozen-lockfile
-      - name: Upgrade dependencies
-        run: npx projen upgrade
-      - name: Find mutations
-        id: create_patch
-        run: |-
-          git add .
-          git diff --staged --patch --exit-code > .repo.patch || echo "patch_created=true" >> $GITHUB_OUTPUT
-      - name: Upload patch
-        if: steps.create_patch.outputs.patch_created
-        uses: actions/upload-artifact@v3
-        with:
-          name: .repo.patch
-          path: .repo.patch
-  pr:
-    name: Create Pull Request
-    needs: upgrade
-    runs-on: ubuntu-latest
-    permissions:
-      contents: read
-    if: ${{ needs.upgrade.outputs.patch_created }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          ref: master
-      - name: Download patch
-        uses: actions/download-artifact@v3
-        with:
-          name: .repo.patch
-          path: ${{ runner.temp }}
-      - name: Apply patch
-        run: '[ -s ${{ runner.temp }}/.repo.patch ] && git apply ${{ runner.temp }}/.repo.patch || echo "Empty patch. Skipping."'
-      - name: Set git identity
-        run: |-
-          git config user.name "github-actions"
-          git config user.email "github-actions@github.com"
-      - name: Create Pull Request
-        id: create-pr
-        uses: peter-evans/create-pull-request@v4
-        with:
-          token: ${{ secrets.PROJEN_GITHUB_TOKEN }}
-          commit-message: |-
-            chore(deps): upgrade dependencies
-
-            Upgrades project dependencies. See details in [workflow run].
-
-            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
-
-            ------
-
-            *Automatically created by projen via the "upgrade-master" workflow*
-          branch: github-actions/upgrade-master
-          title: "chore(deps): upgrade dependencies"
-          body: |-
-            Upgrades project dependencies. See details in [workflow run].
-
-            [Workflow Run]: ${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}
-
-            ------
-
-            *Automatically created by projen via the "upgrade-master" workflow*
-          author: github-actions <github-actions@github.com>
-          committer: github-actions <github-actions@github.com>
-          signoff: true
diff --git a/.gitignore b/.gitignore
index 46b0f385..69e837ac 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,7 +37,6 @@ junit.xml
 /dist/changelog.md
 /dist/version.txt
 !/.github/workflows/release.yml
-!/.github/workflows/upgrade-master.yml
 !/.github/pull_request_template.md
 !/test/
 !/tsconfig.dev.json
diff --git a/.projen/files.json b/.projen/files.json
index 1bf9bddf..f264d813 100644
--- a/.projen/files.json
+++ b/.projen/files.json
@@ -5,7 +5,6 @@
     ".github/pull_request_template.md",
     ".github/workflows/build.yml",
     ".github/workflows/release.yml",
-    ".github/workflows/upgrade-master.yml",
     ".github/workflows/upgrade-projen-master.yml",
     ".gitignore",
     ".projen/deps.json",