diff --git a/aztec-up/bin/docker-compose.sandbox.yml b/aztec-up/bin/docker-compose.sandbox.yml
index 999aa567685..78933ce4c03 100644
--- a/aztec-up/bin/docker-compose.sandbox.yml
+++ b/aztec-up/bin/docker-compose.sandbox.yml
@@ -1,6 +1,6 @@
 services:
   ethereum:
-    image: aztecprotocol/foundry:25f24e677a6a32a62512ad4f561995589ac2c7dc-${ARCH_TAG:-amd64}
+    image: aztecprotocol/foundry:25f24e677a6a32a62512ad4f561995589ac2c7dc
     entrypoint: >
       sh -c '
       if [ -n "$$FORK_BLOCK_NUMBER" ] && [ -n "$$FORK_URL" ]; then