diff --git a/.github/workflows/publish-1.1-docs.yml b/.github/workflows/publish-1.1-docs.yml
new file mode 100644
index 00000000..d2472efb
--- /dev/null
+++ b/.github/workflows/publish-1.1-docs.yml
@@ -0,0 +1,67 @@
+name: Publish 1.1 docs
+
+on:
+  workflow_dispatch:
+
+jobs:
+  publish-docs:
+    name: Publish documentation to nightlies.apache.org
+    runs-on: ubuntu-latest
+    if: github.repository == 'apache/pekko-projection'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          fetch-tags: true
+
+      - name: Set up JDK 8
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 8
+
+      - name: Cache Coursier cache
+        uses: coursier/cache-action@v6
+
+      - name: Build Documentation
+        run: |-
+          sbt "set ThisBuild / version := \"1.1.0-M1\"; docs/paradox; unidoc"
+        env:
+          JAVA_OPTS: "-verbose:gc -Xmx4g"
+
+      # Create directory structure upfront since rsync does not create intermediate directories otherwise
+      - name: Create directory structure
+        run: |-
+          mkdir -p target/nightly-docs/docs/pekko-projection/1.1.0-M1/
+          mkdir -p target/nightly-docs/docs/pekko-projection/1.1/
+          cp -r docs/target/paradox/site/main/ target/nightly-docs/docs/pekko-projection/1.1.0-M1/docs
+          cp -r docs/target/paradox/site/main/ target/nightly-docs/docs/pekko-projection/1.1/docs
+          rm -r docs/target/paradox/site/main/
+          cp -r target/scala-2.13/unidoc target/nightly-docs/docs/pekko-projection/1.1.0-M1/api
+          cp -r target/scala-2.13/unidoc target/nightly-docs/docs/pekko-projection/1.1/api
+          rm -r target/scala-2.13/unidoc
+
+      - name: Upload 1.1.x docs
+        uses: ./.github/actions/sync-nightlies
+        with:
+          upload: true
+          switches: --archive --compress --update --delete --progress --relative
+          local_path: target/nightly-docs/./docs/pekko-projection/1.1.0-M1 # The intermediate dot is to show `--relative` which paths to operate on
+          remote_path: ${{ secrets.NIGHTLIES_RSYNC_PATH }}/pekko/
+          remote_host: ${{ secrets.NIGHTLIES_RSYNC_HOST }}
+          remote_port: ${{ secrets.NIGHTLIES_RSYNC_PORT }}
+          remote_user: ${{ secrets.NIGHTLIES_RSYNC_USER }}
+          remote_key: ${{ secrets.NIGHTLIES_RSYNC_KEY }}
+
+      - name: Upload 1.1 docs
+        uses: ./.github/actions/sync-nightlies
+        with:
+          upload: true
+          switches: --archive --compress --update --delete --progress --relative
+          local_path: target/nightly-docs/./docs/pekko-projection/1.1 # The intermediate dot is to show `--relative` which paths to operate on
+          remote_path: ${{ secrets.NIGHTLIES_RSYNC_PATH }}/pekko/
+          remote_host: ${{ secrets.NIGHTLIES_RSYNC_HOST }}
+          remote_port: ${{ secrets.NIGHTLIES_RSYNC_PORT }}
+          remote_user: ${{ secrets.NIGHTLIES_RSYNC_USER }}
+          remote_key: ${{ secrets.NIGHTLIES_RSYNC_KEY }}