diff --git a/.github/workflows/build-models.yml b/.github/workflows/build_models.yml
similarity index 79%
rename from .github/workflows/build-models.yml
rename to .github/workflows/build_models.yml
index 3d1d0f9..e2a5214 100644
--- a/.github/workflows/build-models.yml
+++ b/.github/workflows/build_models.yml
@@ -143,48 +143,3 @@ jobs:
         name: geomodels-${{matrix.model_name}}-web-assets.tar.gz
         path: web_build/geomodels-${{matrix.model_name}}-web-assets.tar.gz
         if-no-files-found: error
-  build_backend:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Checkout
-      uses: actions/checkout@v4
-    - name: Set up Python 3.10
-      uses: actions/setup-python@v5
-      with:
-        python-version: "3.10"
-    - name: Install PDM
-      run: |
-        python -m pip install --upgrade pip
-        pip install pdm
-    - name: Install dependencies
-      run: |
-        # Remove old venv
-        pdm venv remove -y for-backend-build 2>/dev/null || pdm venv list
-        # Create new venv
-        pdm venv create --with-pip --name for-backend-build 3.10
-        eval $(pdm venv activate for-backend-build)
-        pdm install --venv for-backend-build
-    - name: Make boreholes
-      run: |
-        eval $(pdm venv activate for-backend-build)
-        pushd web_build
-        ./make_boreholes.py -b batch.txt -d query_data.db boreholes
-        tar cvfz boreholes.tar.gz ./boreholes
-        popd
-    - name: Upload borehole data
-      uses: actions/upload-artifact@v4
-      with:
-        name: boreholes.tar.gz
-        path: web_build/boreholes.tar.gz
-        if-no-files-found: error
-    - name: Make API directory
-      run: |
-        pushd web_build
-        ./build_api_dir.sh boreholes/query_data.db
-        popd
-    - name: Upload API directory
-      uses: actions/upload-artifact@v4
-      with:
-        name: api.tar.gz
-        path: web_build/api.tar.gz
-        if-no-files-found: error
diff --git a/.github/workflows/release_backend.yml b/.github/workflows/release_backend.yml
new file mode 100644
index 0000000..730649b
--- /dev/null
+++ b/.github/workflows/release_backend.yml
@@ -0,0 +1,26 @@
+# Release backend from the latest successful build action into a certain release
+name: Release backend api and borehole db
+
+on:
+  push:
+    tags:
+      - "PORTAL_RELEASE_*"
+
+jobs:
+  do-release:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Download artifacts
+      uses: dawidd6/action-download-artifact@v6
+      with:
+        workflow: build_backend.yml
+        workflow_conclusion: success
+        branch: master
+    - name: Add to release
+      uses: softprops/action-gh-release@v2
+      with:
+        name: Source and web asset release based on tag ${{github.ref}}
+        files: |
+          api.tar.gz
+          boreholes.tar.gz
+        fail_on_unmatched_files: true
diff --git a/.github/workflows/release.yml b/.github/workflows/release_models.yml
similarity index 95%
rename from .github/workflows/release.yml
rename to .github/workflows/release_models.yml
index c5e28ed..d0a7fcf 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release_models.yml
@@ -17,7 +17,7 @@ jobs:
     - name: Download artifacts
       uses: dawidd6/action-download-artifact@v6
       with:
-        workflow: build-models.yml
+        workflow: build_models.yml
         workflow_conclusion: success
         branch: master
     - name: Add to release