diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..7801301b
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,24 @@
+name: Upload Python Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+  deploy:
+    runs-on: ubuntu-20.04
+
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-python@v2
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools wheel twine
+    - name: Build and publish
+      env:
+        TWINE_USERNAME: __token__
+        TWINE_PASSWORD: ${{ secrets.PYPI_API_TOKEN }}
+      run: |
+        python setup.py sdist bdist_wheel
+        twine upload dist/*
\ No newline at end of file
diff --git a/ost/generic/ts_ls_mask.py b/ost/generic/ts_ls_mask.py
index fbc8ebb1..7f7ee001 100644
--- a/ost/generic/ts_ls_mask.py
+++ b/ost/generic/ts_ls_mask.py
@@ -52,8 +52,9 @@ def mt_layover(list_of_ls):
 
             df2 = gpd.read_file(file)
             df2 = df2[~(df2.geometry.is_empty | df2.geometry.isna())]
-            geom2 = df2.geometry.buffer(0).unary_union
-            geom = unary_union([geom, geom2])
+            if not df2.empty:
+                geom2 = df2.geometry.buffer(0).unary_union
+                geom = unary_union([geom, geom2])
 
     if y > 0:
         # make geometry valid in case it isn't
diff --git a/setup.py b/setup.py
index 1e48c0da..a1e7147d 100755
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
     name='opensartoolkit',
     packages=find_packages(),
     include_package_data=True,
-    version='0.12.4',
+    version='0.12.5',
     description='High-level functionality for the inventory, download '
                 'and pre-processing of Sentinel-1 data',
     install_requires=[