diff --git a/config/dpkg/control b/config/dpkg/control
index 106038e2..be603c5c 100644
--- a/config/dpkg/control
+++ b/config/dpkg/control
@@ -9,7 +9,7 @@ Homepage: https://github.com/log2timeline/dfvfs
 
 Package: python3-dfvfs
 Architecture: all
-Depends: libbde-python3 (>= 20140531), libewf-python3 (>= 20131210), libfsapfs-python3 (>= 20201107), libfsext-python3 (>= 20210424), libfshfs-python3 (>= 20210530), libfsntfs-python3 (>= 20200921), libfsxfs-python3 (>= 20201114), libfvde-python3 (>= 20160719), libfwnt-python3 (>= 20160418), libluksde-python3 (>= 20200101), libmodi-python3 (>= 20210405), libqcow-python3 (>= 20201213), libsigscan-python3 (>= 20191221), libsmdev-python3 (>= 20140529), libsmraw-python3 (>= 20140612), libvhdi-python3 (>= 20201014), libvmdk-python3 (>= 20140421), libvsgpt-python3 (>= 20210207), libvshadow-python3 (>= 20160109), libvslvm-python3 (>= 20160109), python3-cffi-backend (>= 1.9.1), python3-cryptography (>= 2.0.2), python3-dfdatetime (>= 20210509), python3-dtfabric (>= 20170524), python3-idna (>= 2.5), python3-pytsk3 (>= 20210419), python3-yaml (>= 3.10), ${python3:Depends}, ${misc:Depends}
+Depends: libbde-python3 (>= 20140531), libewf-python3 (>= 20131210), libfsapfs-python3 (>= 20201107), libfsext-python3 (>= 20210424), libfshfs-python3 (>= 20210530), libfsntfs-python3 (>= 20200921), libfsxfs-python3 (>= 20201114), libfvde-python3 (>= 20160719), libfwnt-python3 (>= 20210717), libluksde-python3 (>= 20200101), libmodi-python3 (>= 20210405), libqcow-python3 (>= 20201213), libsigscan-python3 (>= 20191221), libsmdev-python3 (>= 20140529), libsmraw-python3 (>= 20140612), libvhdi-python3 (>= 20201014), libvmdk-python3 (>= 20140421), libvsgpt-python3 (>= 20210207), libvshadow-python3 (>= 20160109), libvslvm-python3 (>= 20160109), python3-cffi-backend (>= 1.9.1), python3-cryptography (>= 2.0.2), python3-dfdatetime (>= 20210509), python3-dtfabric (>= 20170524), python3-idna (>= 2.5), python3-pytsk3 (>= 20210419), python3-yaml (>= 3.10), ${python3:Depends}, ${misc:Depends}
 Description: Python 3 module of dfVFS
  dfVFS, or Digital Forensics Virtual File System, provides read-only access to
  file-system objects from various storage media types and file formats. The goal
diff --git a/dependencies.ini b/dependencies.ini
index 556e7c43..4d8e9f30 100644
--- a/dependencies.ini
+++ b/dependencies.ini
@@ -96,7 +96,7 @@ version_property: get_version()
 [pyfwnt]
 dpkg_name: libfwnt-python3
 l2tbinaries_name: libfwnt
-minimum_version: 20160418
+minimum_version: 20210717
 pypi_name: libfwnt-python
 rpm_name: libfwnt-python3
 version_property: get_version()
diff --git a/requirements.txt b/requirements.txt
index 633c344b..9edb1af6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ libfshfs-python >= 20210530
 libfsntfs-python >= 20200921
 libfsxfs-python >= 20201114
 libfvde-python >= 20160719
-libfwnt-python >= 20160418
+libfwnt-python >= 20210717
 libluksde-python >= 20200101
 libmodi-python >= 20210405
 libqcow-python >= 20201213
diff --git a/setup.cfg b/setup.cfg
index 454d85ef..3deb3910 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -25,7 +25,7 @@ requires = libbde-python3 >= 20140531
            libfsntfs-python3 >= 20200921
            libfsxfs-python3 >= 20201114
            libfvde-python3 >= 20160719
-           libfwnt-python3 >= 20160418
+           libfwnt-python3 >= 20210717
            libluksde-python3 >= 20200101
            libmodi-python3 >= 20210405
            libqcow-python3 >= 20201213
diff --git a/tests/vfs/ntfs_file_entry.py b/tests/vfs/ntfs_file_entry.py
index 64841ace..05f8b490 100644
--- a/tests/vfs/ntfs_file_entry.py
+++ b/tests/vfs/ntfs_file_entry.py
@@ -605,10 +605,10 @@ def testAttributes(self):
     self.assertIsNotNone(security_identifier)
     self.assertEqual(security_identifier.string, 'S-1-5-32-544')
 
-    access_control_list = security_descriptor.discretionary_acl
+    access_control_list = security_descriptor.system_acl
     self.assertIsNone(access_control_list)
 
-    access_control_list = security_descriptor.system_acl
+    access_control_list = security_descriptor.discretionary_acl
     self.assertIsNotNone(access_control_list)
     self.assertEqual(access_control_list.number_of_entries, 1)
 
@@ -716,10 +716,10 @@ def testGetSecurityDescriptor(self):
     self.assertIsNotNone(security_identifier)
     self.assertEqual(security_identifier.string, 'S-1-5-32-544')
 
-    access_control_list = security_descriptor.discretionary_acl
+    access_control_list = security_descriptor.system_acl
     self.assertIsNone(access_control_list)
 
-    access_control_list = security_descriptor.system_acl
+    access_control_list = security_descriptor.discretionary_acl
     self.assertIsNotNone(access_control_list)
     self.assertEqual(access_control_list.number_of_entries, 1)