diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 23ec99c..e03f3bf 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -68,7 +68,7 @@ jobs:
         cp .\Release\* ..\artifacts\$env:ARCH
       env:
         ARCH: Win32
-    - name: Sign generated DLLs
+    - name: Code signing binaries
       uses: azure/trusted-signing-action@v0.5.0
       if: env.CODESIGN == 'true'
       with:
@@ -105,8 +105,17 @@ jobs:
     runs-on: macos-13
     env:
       MACOSX_DEPLOYMENT_TARGET: "10.10"
+      CODESIGN: ${{ !!secrets.CODESIGN_MACOS_P12_URL }}
     steps:
     - uses: actions/checkout@v4
+    - name: Cache apple-codesign
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.cargo/bin
+          ~/.cargo/git
+          ~/.cargo/registry
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
     - name: Build
       run: |
         mkdir build
@@ -127,11 +136,35 @@ jobs:
         done
         cp -Rv include artifacts/
         cp -v ../COPYING ../README ../ChangeLog artifacts
+    - name: Prepare code signing certificate
+      if: env.CODESIGN == 'true'
+      run: |
+        pip3 install awscli
+        aws s3 cp "$CODESIGN_MACOS_P12_URL" ./appledev.p12
+        cargo install apple-codesign
+      env:
+        AWS_DEFAULT_REGION: eu-central-1
+        AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+        AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+        CODESIGN_MACOS_P12_URL: ${{ secrets.CODESIGN_MACOS_P12_URL }}
+    - name: Code signing binaries
+      if: env.CODESIGN == 'true'
+      run: |
+        for arch in arm64 x86_64; do
+          rcodesign sign \
+            --p12-file appledev.p12 \
+            --p12-password "$CODESIGN_MACOS_P12_PASSWORD" \
+            artifacs/${arch}/libdiscid.0.dylib
+        done
+      env:
+        CODESIGN_MACOS_P12_PASSWORD: ${{ secrets.CODESIGN_MACOS_P12_PASSWORD }}
     - name: Archive production artifacts
       uses: actions/upload-artifact@v4
       with:
         name: libdiscid-macos
         path: build/artifacts
+    - name: Code signing cleanup
+      run: rm ./appledev.p12
 
   release:
     runs-on: ubuntu-latest