diff --git a/sdk_container/.repo/manifests/version.txt b/sdk_container/.repo/manifests/version.txt
index c3b96c561c..7489d44256 100644
--- a/sdk_container/.repo/manifests/version.txt
+++ b/sdk_container/.repo/manifests/version.txt
@@ -1,4 +1,4 @@
-FLATCAR_VERSION=4515.1.0
-FLATCAR_VERSION_ID=4515.1.0
-FLATCAR_BUILD_ID=""
+FLATCAR_VERSION=4515.0.1+nightly-20251216-2100
+FLATCAR_VERSION_ID=4515.0.1
+FLATCAR_BUILD_ID="nightly-20251216-2100"
 FLATCAR_SDK_VERSION=4515.0.0