diff --git a/tests/run-tests b/tests/run-tests
index fcc27da092..534518858c 100755
--- a/tests/run-tests
+++ b/tests/run-tests
@@ -211,11 +211,13 @@ def run_tests(pyb, tests, args):
             skip_tests.add('misc/recursive_data.py')        # requires stack checking enabled
             skip_tests.add('misc/recursive_iternext.py')    # requires stack checking enabled
             skip_tests.add('misc/rge_sm.py')                # requires floating point
-            skip_tests.update({'extmod/uctypes_%s.py' % t for t in 'bytearray le native_le ptr_le ptr_native_le sizeof sizeof_native'.split()}) # requires uctypes
+            skip_tests.update({'extmod/uctypes_%s.py' % t for t in 'bytearray le native_le ptr_le ptr_native_le sizeof sizeof_native array_assign_le array_assign_native_le'.split()}) # requires uctypes
             skip_tests.add('extmod/zlibd_decompress.py')    # requires zlib
             skip_tests.add('extmod/ujson_dumps_float.py')   # requires floating point
             skip_tests.add('extmod/ujson_loads_float.py')   # requires floating point
             skip_tests.add('extmod/uheapq1.py')             # uheapq not supported by WiPy
+            skip_tests.add('extmod/urandom_basic.py')       # requires urandom
+            skip_tests.add('extmod/urandom_extra.py')       # requires urandom
 
     # Some tests are known to fail on 64-bit machines
     if pyb is None and platform.architecture()[0] == '64bit':