diff --git a/sdk_container/.repo/manifests/version.txt b/sdk_container/.repo/manifests/version.txt
index 4f8c53a5b7..1fdd308731 100644
--- a/sdk_container/.repo/manifests/version.txt
+++ b/sdk_container/.repo/manifests/version.txt
@@ -1,4 +1,4 @@
-FLATCAR_VERSION=3975.2.0+nightly-20240902-2100
-FLATCAR_VERSION_ID=3975.2.0
-FLATCAR_BUILD_ID="nightly-20240902-2100"
+FLATCAR_VERSION=3975.2.1
+FLATCAR_VERSION_ID=3975.2.1
+FLATCAR_BUILD_ID=""
 FLATCAR_SDK_VERSION=3975.0.0