diff --git a/yarn-project/aztec-sandbox/Dockerfile.multi b/yarn-project/aztec-sandbox/Dockerfile.multi
index 1dd70408fb6..6838d547985 100644
--- a/yarn-project/aztec-sandbox/Dockerfile.multi
+++ b/yarn-project/aztec-sandbox/Dockerfile.multi
@@ -1,4 +1,4 @@
-FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/aztec-sandbox AS builder
+FROM --platform=$BUILDPLATFORM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/aztec-sandbox AS builder
 
 FROM node:18-alpine