diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dc0c487..944cd98 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -25,7 +25,7 @@ jobs:
           mv build/*.tar.gz release
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2
         with:
           name: linux-latest
           path: release
@@ -51,14 +51,16 @@ jobs:
           mv dist\windows\wintun build\dist\windows\
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2
         with:
           name: windows-latest
           path: build
 
   build-darwin:
-    name: Build Darwin amd64
-    runs-on: macOS-latest
+    name: Build Universal Darwin
+    env:
+      HAS_SIGNING_CREDS: ${{ secrets.AC_USERNAME != '' }}
+    runs-on: macos-11
     steps:
       - name: Set up Go 1.17
         uses: actions/setup-go@v2
@@ -68,38 +70,49 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v2
 
-      - name: Build
+      - name: Import certificates
+        if: env.HAS_SIGNING_CREDS == 'true'
+        uses: Apple-Actions/import-codesign-certs@v1
+        with:
+          p12-file-base64: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_P12_BASE64 }}
+          p12-password: ${{ secrets.APPLE_DEVELOPER_CERTIFICATE_PASSWORD }}
+
+      - name: Build, sign, and notarize
+        env:
+          AC_USERNAME: ${{ secrets.AC_USERNAME }}
+          AC_PASSWORD: ${{ secrets.AC_PASSWORD }}
         run: |
-          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" service build/nebula-darwin-amd64.tar.gz
-          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" service build/nebula-darwin-arm64.tar.gz
+          rm -rf release
           mkdir release
-          mv build/*.tar.gz release
+          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" service build/darwin-amd64/nebula build/darwin-amd64/nebula-cert
+          make BUILD_NUMBER="${GITHUB_REF#refs/tags/v}" service build/darwin-arm64/nebula build/darwin-arm64/nebula-cert
+          lipo -create -output ./release/nebula ./build/darwin-amd64/nebula ./build/darwin-arm64/nebula
+          lipo -create -output ./release/nebula-cert ./build/darwin-amd64/nebula-cert ./build/darwin-arm64/nebula-cert
+
+          if [ -n "$AC_USERNAME" ]; then
+            codesign -s "10BC1FDDEB6CE753550156C0669109FAC49E4D1E" -f -v --timestamp --options=runtime -i "net.defined.nebula" ./release/nebula
+            codesign -s "10BC1FDDEB6CE753550156C0669109FAC49E4D1E" -f -v --timestamp --options=runtime -i "net.defined.nebula-cert" ./release/nebula-cert
+          fi
+
+          zip -j release/nebula-darwin.zip release/nebula-cert release/nebula
+
+          if [ -n "$AC_USERNAME" ]; then
+            xcrun notarytool submit ./release/nebula-darwin.zip --team-id "576H3XS7FP" --apple-id "$AC_USERNAME" --password "$AC_PASSWORD" --wait
+          fi
 
       - name: Upload artifacts
-        uses: actions/upload-artifact@v1
+        uses: actions/upload-artifact@v2
         with:
           name: darwin-latest
-          path: release
+          path: ./release/*
 
   release:
     name: Create and Upload Release
     needs: [build-linux, build-darwin, build-windows]
     runs-on: ubuntu-latest
     steps:
-      - name: Download Linux artifacts
-        uses: actions/download-artifact@v1
-        with:
-          name: linux-latest
-
-      - name: Download Darwin artifacts
-        uses: actions/download-artifact@v1
-        with:
-          name: darwin-latest
-
-      - name: Download Windows artifacts
-        uses: actions/download-artifact@v1
-        with:
-          name: windows-latest
+      - name: Download artifacts
+        uses: actions/download-artifact@v2
 
       - name: Zip Windows
         run: |
@@ -117,12 +130,17 @@ jobs:
                 sha256sum <nebula.exe | sed 's=-$=nebula-windows-amd64.zip/nebula.exe='
                 sha256sum <nebula-cert.exe | sed 's=-$=nebula-windows-amd64.zip/nebula-cert.exe='
                 sha256sum nebula-windows-amd64.zip
+              elif [ "$dir" = darwin-latest ]
+              then
+                sha256sum <nebula-darwin.zip | sed 's=-$=nebula-darwin.zip='
+                sha256sum <nebula | sed 's=-$=nebula-darwin.zip/nebula='
+                sha256sum <nebula-cert | sed 's=-$=nebula-darwin.zip/nebula-cert='
               else
-                  for v in *.tar.gz
-                  do
-                    sha256sum $v
-                    tar zxf $v --to-command='sh -c "sha256sum | sed s=-$='$v'/$TAR_FILENAME="'
-                  done
+                for v in *.tar.gz
+                do
+                  sha256sum $v
+                  tar zxf $v --to-command='sh -c "sha256sum | sed s=-$='$v'/$TAR_FILENAME="'
+                done
               fi
             )
           done | sort -k 2 >SHASUM256.txt
@@ -152,25 +170,15 @@ jobs:
           asset_name: SHASUM256.txt
           asset_content_type: text/plain
 
-      - name: Upload darwin-amd64
+      - name: Upload darwin zip
         uses: actions/upload-release-asset@v1.0.1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
           upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./darwin-latest/nebula-darwin-amd64.tar.gz
-          asset_name: nebula-darwin-amd64.tar.gz
-          asset_content_type: application/gzip
-
-      - name: Upload darwin-arm64
-        uses: actions/upload-release-asset@v1.0.1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        with:
-          upload_url: ${{ steps.create_release.outputs.upload_url }}
-          asset_path: ./darwin-latest/nebula-darwin-arm64.tar.gz
-          asset_name: nebula-darwin-arm64.tar.gz
-          asset_content_type: application/gzip
+          asset_path: ./darwin-latest/nebula-darwin.zip
+          asset_name: nebula-darwin.zip
+          asset_content_type: application/zip
 
       - name: Upload windows-amd64
         uses: actions/upload-release-asset@v1.0.1
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 32697ae..60f4266 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -48,7 +48,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [windows-latest, macOS-latest]
+        os: [windows-latest, macos-11]
     steps:
 
     - name: Set up Go 1.17
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5e86b77..fb4fd08 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,6 +33,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   is a large improvement over the TAP driver that was used in previous versions. If you had a previous version
   of `nebula` running, you will want to disable the tap driver in Control Panel, or uninstall the `tap0901` driver
   before running this version. (#289)
+  
+- Darwin binaries are now universal (works on both amd64 and arm64), signed, and shipped in a notarized zip file.
+  `nebula-darwin.zip` will be the only darwin release artifact. (#571)
 
 ### Deprecated