diff --git a/meta/classes-recipe/image.bbclass b/meta/classes-recipe/image.bbclass
index d17d1860..290d6d5c 100644
--- a/meta/classes-recipe/image.bbclass
+++ b/meta/classes-recipe/image.bbclass
@@ -100,6 +100,7 @@ ROOTFS_FEATURES += "\
     populate-systemd-preset \
     generate-sbom \
     clean-apt-credentials \
+    clean-dpkg-config \
     "
 ROOTFS_PACKAGES += "${IMAGE_PREINSTALL} ${@isar_multiarch_packages('IMAGE_INSTALL', d)}"
 ROOTFS_VARDEPS += "IMAGE_INSTALL"
diff --git a/meta/classes-recipe/rootfs.bbclass b/meta/classes-recipe/rootfs.bbclass
index d3b0d471..f7822351 100644
--- a/meta/classes-recipe/rootfs.bbclass
+++ b/meta/classes-recipe/rootfs.bbclass
@@ -40,6 +40,7 @@ ROOTFS_BASE_DISTRO ?= "${BASE_DISTRO}"
 # 'clean-log-files' - delete log files that are not owned by packages
 # 'populate-systemd-preset' - enable systemd units according to systemd presets
 # 'clean-apt-credentials' - remove apt auth credentials written by ISAR_APT_CREDS
+# 'clean-dpkg-config' - remove ISAR-specific dpkg configuration files from the rootfs
 
 # convenience variable to enable all features needed for a reproducible rootfs build
 ROOTFS_FEATURES_REPRODUCIBLE = " \
@@ -577,6 +578,11 @@ rootfs_postprocess_clean_apt_credentials() {
     run_privileged rm -f "${ROOTFSDIR}/etc/apt/auth.conf.d/isar.conf"
 }
 
+ROOTFS_POSTPROCESS_COMMAND += "${@bb.utils.contains('ROOTFS_FEATURES', 'clean-dpkg-config', 'rootfs_postprocess_clean_dpkg_config', '', d)}"
+rootfs_postprocess_clean_dpkg_config() {
+    run_privileged find "${ROOTFSDIR}/etc/dpkg/dpkg.cfg.d" -type f -name '*isar*.cfg' -delete
+}
+
 ROOTFS_POSTPROCESS_COMMAND += "${@bb.utils.contains('ROOTFS_FEATURES', 'clean-pycache', 'rootfs_postprocess_clean_pycache', '', d)}"
 rootfs_postprocess_clean_pycache() {
     run_privileged find ${ROOTFSDIR}/usr -type f -name '*.pyc'       -delete -print