diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7f177439..c4e6be70 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,34 +22,14 @@ jobs:
       matrix:
         nginx_version:
           [
-            1.17.3,
-            1.17.8,
+            1.15.12,
+            1.16.1,
+            1.17.10,
             1.18.0,
-            1.19.2,
-            1.19.3,
-            1.19.4,
-            1.19.5,
-            1.19.6,
-            1.19.7,
-            1.19.8,
-            1.19.9,
             1.19.10,
-            1.20.0,
-            1.20.1,
             1.20.2,
-            1.21.0,
-            1.21.1,
-            1.21.2,
-            1.21.3,
-            1.21.4,
-            1.21.5,
             1.21.6,
-            1.22.0,
             1.22.1,
-            1.23.0,
-            1.23.1,
-            1.23.2,
-            1.23.3,
             1.23.4,
             1.24.0,
             1.25.0,
@@ -73,6 +53,11 @@ jobs:
       - name: Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Setup QEMU
+        uses: docker/setup-qemu-action@v3
+        with:
+          platforms: arm64
+
       - name: Build binary
         uses: docker/build-push-action@v5
         with:
@@ -82,24 +67,28 @@ jobs:
           tags: ${{ matrix.nginx_version }}
           cache-from: type=gha,scope=${{ matrix.nginx_version }}
           cache-to: type=gha,scope=${{ matrix.nginx_version }},mode=max
+          platforms: linux/amd64,linux/arm64
           provenance: true
           target: export
           build-args: NGINX_VERSION=${{ matrix.nginx_version }}
-          outputs: type=tar,dest=linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tar
+          outputs: type=local,dest=out
 
-      - name: Compress tar
+      - name: Compress output
         run: |
-          gzip -9 linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tar
+          tar -czf linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tgz out/linux_amd64/ngx_http_opentracing_module.so
+          tar -czf linux-arm64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tgz out/linux_arm64/ngx_http_opentracing_module.so
+          cp out/linux_amd64/provenance.json linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.provenance.json
+          cp out/linux_arm64/provenance.json linux-arm64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.provenance.json
 
       - name: Upload artifact
         uses: actions/upload-artifact@v3
         with:
-          name: linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tar.gz
-          path: linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tar.gz
+          name: nginx-opentracing-modules-${{ matrix.nginx_version }}
+          path: linux-(amd64|arm64)-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.(tgz|provenance.json)
 
       - name: Upload binaries on release
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         if: github.ref_type == 'tag'
         run: |
-          gh release upload ${{ github.ref_name }} linux-amd64-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.tar.gz --clobber
+          gh release upload ${{ github.ref_name }} linux-(amd64|arm64)-nginx-${{ matrix.nginx_version }}-ngx_http_module.so.(tgz|provenance.json) --clobber
diff --git a/.gitignore b/.gitignore
index 92b5f87e..b5d11599 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,8 @@ test-log/
 
 # IDEs
 .vscode
+
+# macOS
+.DS_Store
+
+out
diff --git a/build/Dockerfile b/build/Dockerfile
index 016aa03a..8992e361 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -16,8 +16,8 @@ RUN apt-get update && \
     libpcre3 libpcre3-dev \
     zlib1g-dev
 
-ENV CFLAGS="-march=x86-64 -fPIC"
-ENV CXXFLAGS="-march=x86-64 -fPIC"
+ENV CFLAGS="-fPIC"
+ENV CXXFLAGS="-fPIC"
 ENV LDFLAGS="-fPIC"