diff --git a/test_prctl.py b/test_prctl.py
index 3e01f2f..5e19855 100644
--- a/test_prctl.py
+++ b/test_prctl.py
@@ -279,6 +279,7 @@ class PrctlTest(unittest.TestCase):
             os._exit(0)
         self.assertRaises(OSError, prctl.set_ptracer, new_pid)
 
+    @unittest.skip('systemd-nspawn uses seccomp')
     @require('get_seccomp')
     def test_seccomp(self):
         """Test manipulation of the seccomp setting"""
@@ -323,6 +324,8 @@ class PrctlTest(unittest.TestCase):
                 prctl.securebits.noroot = True
             self.assertRaises(OSError, set_true)
 
+    # See https://github.com/seveas/python-prctl/issues/31
+    @unittest.skip('not working in containers')
     @require('set_speculation_ctrl')
     def test_speculation_ctrl(self):
        self.assertTrue(prctl.get_speculation_ctrl(prctl.SPEC_STORE_BYPASS) > 0)
@@ -388,6 +391,7 @@ class PrctlTest(unittest.TestCase):
             self.assertRaises(OSError, prctl.get_unalign)
             self.assertRaises(OSError, prctl.set_unalign, prctl.UNALIGN_NOPRINT)
 
+    @unittest.skip('systemd-nspawn adds CAP_SETUID')
     def test_getcaps(self):
         """Test the get_caps function"""
         self.assertEqual(prctl.get_caps(), {prctl.CAP_EFFECTIVE: {}, prctl.CAP_INHERITABLE: {}, prctl.CAP_PERMITTED: {}})
@@ -404,6 +408,7 @@ class PrctlTest(unittest.TestCase):
             prctl.get_caps((1234,prctl.ALL_FLAGS))
         self.assertRaises(ValueError, fail)
 
+    @unittest.skip('systemd-nspawn adds CAP_SETUID')
     def test_setcaps(self):
         """Test the setcaps function"""
         if self.am_root: