diff --git a/sdk_container/.repo/manifests/version.txt b/sdk_container/.repo/manifests/version.txt
index f3dfc6fb40f..abb6e2b51cb 100644
--- a/sdk_container/.repo/manifests/version.txt
+++ b/sdk_container/.repo/manifests/version.txt
@@ -1,4 +1,4 @@
-FLATCAR_VERSION=4833.0.0+nightly-20260924-2100
-FLATCAR_VERSION_ID=4833.0.0
-FLATCAR_BUILD_ID="nightly-20260924-2100"
-FLATCAR_SDK_VERSION=4833.0.0+nightly-20260924-2100
+FLATCAR_VERSION=4831.0.0+nightly-20260922-2100
+FLATCAR_VERSION_ID=4831.0.0
+FLATCAR_BUILD_ID=nightly-20260922-2100
+FLATCAR_SDK_VERSION=4831.0.0+nightly-20260922-2100