diff --git a/west.yml b/west.yml
index 580363c..6bb551c 100644
--- a/west.yml
+++ b/west.yml
@@ -13,4 +13,10 @@ manifest:
     - name: zephyr
       remote: zephyrproject-rtos
       revision: main
-      import: true
+      import:
+        # By using name-allowlist we can clone only the modules that are
+        # strictly needed by the application.
+        name-allowlist:
+          - cmsis      # required by the ARM port
+          - hal_nordic # required by the custom_plank board (Nordic based)
+          - hal_stm32  # required by the nucleo_f302r8 board (STM32 based)