diff --git a/kas/opt/Kconfig b/kas/opt/Kconfig
index bc4ed997..cb3f0d0c 100644
--- a/kas/opt/Kconfig
+++ b/kas/opt/Kconfig
@@ -213,3 +213,15 @@ config KAS_INCLUDE_USE_DRACUT
 	string
 	default "kas/opt/dracut.yaml"
 	depends on USE_DRACUT
+
+config PREFETCH_BASE_APT
+	bool "Prefetch base-apt repo"
+	default y
+	help
+	  This makse Isar always take packages from base-apt repository where they
+	  are prefetched by debrepo script before requested.
+
+config KAS_INCLUDE_PREFETCH_BASE_APT
+	string
+	default "kas/opt/prefetch-base-apt.yaml"
+	depends on PREFETCH_BASE_APT
diff --git a/kas/opt/prefetch-base-apt.yaml b/kas/opt/prefetch-base-apt.yaml
new file mode 100644
index 00000000..0cbdb93f
--- /dev/null
+++ b/kas/opt/prefetch-base-apt.yaml
@@ -0,0 +1,9 @@
+# This software is a part of Isar.
+# Copyright (C) 2024 ilbers GmbH
+
+header:
+  version: 14
+
+local_conf_header:
+  prefetch-base-apt: |
+    ISAR_PREFETCH_BASE_APT = "1"