diff --git a/board/czechlight/common/rauc-hook.sh b/board/czechlight/common/rauc-hook.sh
new file mode 100755
index 0000000..65401d6
--- /dev/null
+++ b/board/czechlight/common/rauc-hook.sh
@@ -0,0 +1,22 @@
+#!/bin/sh
+
+case "$1" in
+  slot-post-install)
+    case "$RAUC_SLOT_CLASS" in
+      cfg)
+        if [[ -d /cfg/etc ]]; then
+          cp -a /cfg/etc ${RAUC_SLOT_MOUNT_POINT}/
+        fi
+        ;;
+      *)
+        echo "Internal error: hook mismatched"
+        exit 11
+    esac
+    ;;
+  *)
+    echo "Internal error: unrecognized hook"
+    exit 11
+    ;;
+esac
+
+exit 0