diff --git a/VERSION b/VERSION
index 79a614418f74..fbc3c486317d 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.4.4
+2.4.4-dev0
diff --git a/west.yml b/west.yml
index 1f8b6dbf789e..9b3c296ef5dd 100644
--- a/west.yml
+++ b/west.yml
@@ -37,6 +37,8 @@ manifest:
       url-base: https://github.com/ant-nrfconnect
     - name: babblesim
       url-base: https://github.com/BabbleSim
+    - name: thst
+      url-base: https://github.com/thst-nordic
 
   # If not otherwise specified, the projects below should be obtained
   # from the ncs remote.
@@ -58,8 +60,9 @@ manifest:
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/introduction/index.html
     # https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/modules.html
     - name: zephyr
+      remote: thst
       repo-path: sdk-zephyr
-      revision: v3.3.99-ncs1-3
+      revision: v3.3.99-ncs1-4
       import:
         # In addition to the zephyr repository itself, NCS also
         # imports the contents of zephyr/west.yml at the above
@@ -179,7 +182,7 @@ manifest:
           compare-by-default: false
     - name: homekit
       repo-path: sdk-homekit
-      revision: v2.4.4
+      revision: v2.4.3
       groups:
         - homekit
     - name: find-my