diff --git a/pmb/config/__init__.py b/pmb/config/__init__.py
index 5c7c59df..c281e07c 100644
--- a/pmb/config/__init__.py
+++ b/pmb/config/__init__.py
@@ -203,6 +203,7 @@ necessary_kconfig_options = {
     ">=4.0.0": {
         "all": {
             "UEVENT_HELPER": True,
+            "USER_NS": True,
         },
     },
     "<5.2.0": {
diff --git a/test/testdata/kconfig_check/bad-array-missing-some-options b/test/testdata/kconfig_check/bad-array-missing-some-options
index e6581d20..7fbed3e2 100644
--- a/test/testdata/kconfig_check/bad-array-missing-some-options
+++ b/test/testdata/kconfig_check/bad-array-missing-some-options
@@ -30,6 +30,7 @@ CONFIG_VT=y
 CONFIG_UEVENT_HELPER=y
 CONFIG_LBDAF=y
 CONFIG_CRYPTO_XTS=y
+CONFIG_USER_NS=y
 CONFIG_EXT4_FS=y
 CONFIG_SQUASHFS=y
 CONFIG_SQUASHFS_XZ=y
diff --git a/test/testdata/kconfig_check/bad-missing-required-option b/test/testdata/kconfig_check/bad-missing-required-option
index 41efc846..0bf49f12 100644
--- a/test/testdata/kconfig_check/bad-missing-required-option
+++ b/test/testdata/kconfig_check/bad-missing-required-option
@@ -31,3 +31,4 @@ CONFIG_VT=y
 CONFIG_UEVENT_HELPER=y
 CONFIG_LBDAF=y
 CONFIG_CRYPTO_XTS=y
+CONFIG_USER_NS=y
diff --git a/test/testdata/kconfig_check/bad-wrong-option-set b/test/testdata/kconfig_check/bad-wrong-option-set
index b87b31b7..678b290a 100644
--- a/test/testdata/kconfig_check/bad-wrong-option-set
+++ b/test/testdata/kconfig_check/bad-wrong-option-set
@@ -30,5 +30,6 @@ CONFIG_VT=y
 CONFIG_UEVENT_HELPER=y
 CONFIG_LBDAF=y
 CONFIG_CRYPTO_XTS=y
+CONFIG_USER_NS=y
 ### here's one wrong option set:
 ANDROID_PARANOID_NETWORK=y
diff --git a/test/testdata/kconfig_check/good b/test/testdata/kconfig_check/good
index 7ce8144b..5a388aed 100644
--- a/test/testdata/kconfig_check/good
+++ b/test/testdata/kconfig_check/good
@@ -46,3 +46,5 @@ CONFIG_KERNEL_GZIP=y
 # CONFIG_KERNEL_LZMA is not set
 CONFIG_DEFAULT_HOSTNAME="(none)"
 CONFIG_SWAP=y
+# needed for bubblewrap
+CONFIG_USER_NS=y
diff --git a/test/testdata/kconfig_check/good-anbox b/test/testdata/kconfig_check/good-anbox
index 3643a3eb..67b96194 100644
--- a/test/testdata/kconfig_check/good-anbox
+++ b/test/testdata/kconfig_check/good-anbox
@@ -49,3 +49,5 @@ CONFIG_VETH=y
 CONFIG_VLAN_8021Q=y
 CONFIG_BRIDGE=y
 CONFIG_BRIDGE_VLAN_FILTERING=y
+# needed for bubblewrap
+CONFIG_USER_NS=y