diff --git a/prometheus-to-sd/Dockerfile b/prometheus-to-sd/Dockerfile
index a50bc40ff..cecc1b514 100644
--- a/prometheus-to-sd/Dockerfile
+++ b/prometheus-to-sd/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM --platform=$BUILDPLATFORM golang:1.17 as builder
+FROM --platform=$BUILDPLATFORM golang:1.17-alpine as builder
 WORKDIR ${GOPATH}/src/github.com/GoogleCloudPlatform/k8s-stackdriver/prometheus-to-sd
 COPY . ./