diff --git a/.github/workflows/actions.yaml b/.github/workflows/actions.yaml
new file mode 100644
index 000000000..e65ff752b
--- /dev/null
+++ b/.github/workflows/actions.yaml
@@ -0,0 +1,70 @@
+name: Darling CI
+
+on: [push]
+
+jobs:
+  build-deb:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Checkout submodules
+      shell: bash
+      run: |
+        git submodule update --init --recursive --depth=1
+
+    - name: Post-checkout script
+      run: |
+        ./tools/post-checkout.sh
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update && sudo apt-get install devscripts equivs debhelper
+        sudo mk-build-deps -i -r -t "apt-get --no-install-recommends -y" debian/control
+
+    # see https://github.com/actions/virtual-environments/issues/2606#issuecomment-772683150
+    - name: Free up space
+      run: |
+        sudo rm -rf /usr/share/dotnet
+
+    - name: Build DEBs
+      run: |
+        ./tools/debian/make-deb
+
+    - name: Move DEBs
+      run: |
+        mkdir dist && mv ../*.deb dist
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v1
+      with:
+        name: 'debs'
+        path: dist/
+
+  build-dsc:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Checkout submodules
+      shell: bash
+      run: |
+        git submodule update --init --recursive --depth=1
+
+    - name: Install dependencies
+      run: |
+        sudo apt-get update && sudo apt-get install devscripts equivs debhelper
+
+    - name: Build DSCs
+      run: |
+        ./tools/debian/make-deb --dsc
+
+    - name: Move DSCs
+      run: |
+        mkdir source && mv ../*~$(lsb_release -cs).* source
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v1
+      with:
+        name: 'source'
+        path: source/
diff --git a/src/external/swift b/src/external/swift
index 9d723239b..a713ab13e 160000
--- a/src/external/swift
+++ b/src/external/swift
@@ -1 +1 @@
-Subproject commit 9d723239b3e50149ee3f3c84cbfe6a4ca08c5722
+Subproject commit a713ab13ebffe88923a2066ad8c9133cb4fe8636
diff --git a/tools/post-checkout.sh b/tools/post-checkout.sh
new file mode 100755
index 000000000..0119d92e4
--- /dev/null
+++ b/tools/post-checkout.sh
@@ -0,0 +1,5 @@
+#!/bin/bash
+
+SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
+
+"$SCRIPT_DIR/../src/external/swift/post-checkout.sh"