diff --git a/build.yaml b/build.yaml
index 28b578956..16120e014 100644
--- a/build.yaml
+++ b/build.yaml
@@ -59,7 +59,7 @@ machamp:
       # to ensure a clearer docker build env
       code-checkout:
         type: cmd
-        command: echo checkout
+        command: echo checkout && git submodule init && git submodule update
         # default machamp builder image does not work for multi arch
         builder_image: us.gcr.io/snapchat-build-artifacts/prod/snapchat/img/ubuntu/ubuntu-23-04@sha256:bd43177a80e6ce1c3583e8ea959b88a9081c0f56b765ec9c5a157c27a637c23b
       docker:
diff --git a/machamp_scripts/Dockerfile b/machamp_scripts/Dockerfile
index d15a62df9..66627ab34 100644
--- a/machamp_scripts/Dockerfile
+++ b/machamp_scripts/Dockerfile
@@ -24,7 +24,7 @@ RUN set -eux; \
         gosu nobody true
 # build KeyDB
 ARG MAKE_JOBS=""
-ARG ENABLE_FLASH=""
+ARG ENABLE_FLASH="yes"
 COPY . /tmp/keydb-internal
 RUN set -eux; \
         cd /tmp/keydb-internal; \