diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index b5916c9..046be62 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -258,4 +258,8 @@ Releases are cut from GitHub Actions, never from a local machine.
 
 Stable versions must match `X.Y.Z` and can only be cut from `main`.
 
-The workflow pushes with a token minted from the Portabase GitHub App (`APP_ID` repository variable, `APP_PRIVATE_KEY` secret), scoped to *Contents: write*. The app must be installed on this repository and allowed to push to `main`. A tag pushed with the default `GITHUB_TOKEN` would not trigger the release workflows.
+### Beta releases
+
+Every push to `dev` publishes a beta automatically (**Beta release** workflow): no version commit, no Discord notification. The version is the next patch of `pyproject.toml` suffixed with the run number (`26.09.2` → `26.09.3b57`), baked into the binaries at build time and published as a GitHub prerelease. Install it with `portabase config channel beta`; stable users never receive it.
+
+The Bump version workflow pushes with a token minted from the Portabase GitHub App (`APP_ID` repository variable, `APP_PRIVATE_KEY` secret), scoped to *Contents: write*. The app must be installed on this repository and allowed to push to `main`. A tag pushed with the default `GITHUB_TOKEN` would not trigger the release workflows.
diff --git a/.github/workflows/beta.yml b/.github/workflows/beta.yml
new file mode 100644
index 0000000..d1eb694
--- /dev/null
+++ b/.github/workflows/beta.yml
@@ -0,0 +1,58 @@
+name: Beta release
+
+on:
+  push:
+    branches: [dev]
+
+permissions: {}
+
+concurrency:
+  group: beta-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  version:
+    name: version
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    permissions:
+      contents: read
+    outputs:
+      version: ${{ steps.compute.outputs.version }}
+    steps:
+      - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
+
+      - id: compute
+        env:
+          RUN_NUMBER: ${{ github.run_number }}
+        run: |
+          set -euo pipefail
+          CURRENT=$(sed -n 's/^version = "\(.*\)"/\1/p' pyproject.toml)
+          if [[ ! "$CURRENT" =~ ^([0-9]+)\.([0-9]+)\.([0-9]+)(.*)$ ]]; then
+            echo "::error::cannot parse version '$CURRENT' from pyproject.toml"
+            exit 1
+          fi
+          MAJOR=${BASH_REMATCH[1]} MINOR=${BASH_REMATCH[2]} PATCH=${BASH_REMATCH[3]}
+          PATCH=$((10#$PATCH + 1))
+          VERSION="$MAJOR.$MINOR.${PATCH}b$RUN_NUMBER"
+          echo "Beta version: $VERSION"
+          echo "version=$VERSION" >> "$GITHUB_OUTPUT"
+
+  build:
+    needs: version
+    permissions:
+      contents: read
+      id-token: write
+      attestations: write
+    uses: ./.github/workflows/build.yml
+    with:
+      version: ${{ needs.version.outputs.version }}
+
+  publish:
+    needs: [version, build]
+    permissions:
+      contents: write
+    uses: ./.github/workflows/publish.yml
+    with:
+      prerelease: true
+      tag: ${{ needs.version.outputs.version }}
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7942dbf..3ddbf7c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,6 +2,12 @@ name: Build binaries
 
 on:
   workflow_call:
+    inputs:
+      version:
+        description: "Version baked into the binary. Default: the one in pyproject.toml."
+        required: false
+        type: string
+        default: ""
 
 permissions: {}
 
@@ -44,6 +50,13 @@ jobs:
       - uses: actions/checkout@11d5960a326750d5838078e36cf38b85af677262 # v4
       - uses: ./.github/actions/setup
 
+      # perl rather than sed -i, which differs between GNU and BSD (macOS).
+      - name: Set version
+        if: inputs.version != ''
+        env:
+          VERSION: ${{ inputs.version }}
+        run: perl -pi -e 's/^version = ".*"/version = "$ENV{VERSION}"/' pyproject.toml
+
       - name: Build
         id: build
         uses: ./.github/actions/build
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 07edf57..10c9e05 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -6,6 +6,11 @@ on:
       prerelease:
         required: true
         type: boolean
+      tag:
+        description: "Tag to create on the current commit. Default: the pushed tag."
+        required: false
+        type: string
+        default: ""
 
 permissions: {}
 
@@ -21,6 +26,15 @@ jobs:
         with:
           fetch-depth: 0
 
+      - name: Create tag
+        if: inputs.tag != ''
+        env:
+          TAG: ${{ inputs.tag }}
+        run: |
+          set -euo pipefail
+          git tag "$TAG" "$GITHUB_SHA"
+          git push origin "refs/tags/$TAG"
+
       - name: Download binaries
         uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
         with:
@@ -37,6 +51,7 @@ jobs:
         uses: mikepenz/release-changelog-builder-action@c9dc8369bccbc41e0ac887f8fd674f5925d315f7 # v5
         with:
           mode: COMMIT
+          toTag: ${{ inputs.tag }}
           configurationJson: |
             {
               "template": "#{{CHANGELOG}}",
@@ -59,6 +74,7 @@ jobs:
       - name: Create GitHub release
         uses: softprops/action-gh-release@3bb12739c298aeb8a4eeaf626c5b8d85266b0e65 # v2
         with:
+          tag_name: ${{ inputs.tag }}
           files: dist/*
           generate_release_notes: false
           body: ${{ steps.changelog.outputs.changelog }}
diff --git a/.plumber.yaml b/.plumber.yaml
new file mode 100644
index 0000000..59d1534
--- /dev/null
+++ b/.plumber.yaml
@@ -0,0 +1,8 @@
+extends: plumber:default
+version: "2.0"
+
+github:
+  controls:
+    workflowMustIncludeRequiredActions:
+      enabled: true
+      required: gitleaks/gitleaks-action AND aquasecurity/trivy-action AND getplumber/plumber
diff --git a/uv.lock b/uv.lock
index 357a540..de95f97 100644
--- a/uv.lock
+++ b/uv.lock
@@ -521,7 +521,7 @@ wheels = [
 
 [[package]]
 name = "portabase-cli"
-version = "26.8.12"
+version = "26.9.2"
 source = { virtual = "." }
 dependencies = [
     { name = "jinja2" },