diff --git a/images/echoheaders/Dockerfile b/images/echoheaders/Dockerfile
index 1e0d77788..ffb842f50 100644
--- a/images/echoheaders/Dockerfile
+++ b/images/echoheaders/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM gcr.io/google_containers/nginx-slim:0.18
+FROM gcr.io/google_containers/nginx-slim:0.21
 
 ADD nginx.conf /etc/nginx/nginx.conf
 ADD template.lua /usr/local/share/lua/5.1/