diff --git a/sdk_container/src/third_party/coreos-overlay/.github/workflows/setup-flatcar-sdk.sh b/sdk_container/src/third_party/coreos-overlay/.github/workflows/setup-flatcar-sdk.sh
index 6c60b701a7..4d5b7c3201 100755
--- a/sdk_container/src/third_party/coreos-overlay/.github/workflows/setup-flatcar-sdk.sh
+++ b/sdk_container/src/third_party/coreos-overlay/.github/workflows/setup-flatcar-sdk.sh
@@ -3,6 +3,7 @@
 set -euo pipefail
 
 sudo ln -sfn /bin/bash /bin/sh
+sudo apt-get update
 sudo apt-get install -y ca-certificates curl git gnupg lbzip2 lsb-release \
     qemu-user-static
 sudo mkdir -p /etc/apt/keyrings