diff --git a/web-wasi/Dockerfile.in b/web-wasi/Dockerfile.in
index df9d477..43ae696 100644
--- a/web-wasi/Dockerfile.in
+++ b/web-wasi/Dockerfile.in
@@ -1,5 +1,6 @@
 ARG ORG=dockcross
-FROM ${ORG}/base:latest
+ARG HOST_ARCH=amd64
+FROM ${ORG}/base:latest-${HOST_ARCH}
 
 LABEL maintainer="Matt McCormick matt@mmmccormick.com"