diff --git a/west.yml b/west.yml
index 16a8a7dd9910..fb3ec0d96c78 100644
--- a/west.yml
+++ b/west.yml
@@ -65,7 +65,7 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
       repo-path: sdk-zephyr
-      revision: v4.0.99-ncs1-1
+      revision: 8454ddc32c8cda4e0449b55fa96ae2431b4a47ac
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above