diff --git a/tests/basics/class_store_class.py b/tests/basics/class_store_class.py
index 09a8e8bc4d0221e6407ad90bb9981f4e06608f2b..10b94d3c6a1e9a6e23698018e8d673f71f3b84ad 100644
--- a/tests/basics/class_store_class.py
+++ b/tests/basics/class_store_class.py
@@ -5,7 +5,7 @@
 try:
     from collections import namedtuple
 except ImportError:
-    from _collections import namedtuple
+    from ucollections import namedtuple
 
 _DefragResultBase = namedtuple('DefragResult', [ 'foo', 'bar' ])
 
diff --git a/tests/basics/namedtuple1.py b/tests/basics/namedtuple1.py
index ae795ba6def65c572984556401a5d0b0e057a52d..dfbb79f2ebe273c5db25a1283c8167689904f51d 100644
--- a/tests/basics/namedtuple1.py
+++ b/tests/basics/namedtuple1.py
@@ -1,7 +1,7 @@
 try:
     from collections import namedtuple
 except ImportError:
-    from _collections import namedtuple
+    from ucollections import namedtuple
 
 T = namedtuple("Tup", ["foo", "bar"])
 # CPython prints fully qualified name, what we don't bother to do so far
diff --git a/tests/basics/ordereddict1.py b/tests/basics/ordereddict1.py
index 26d0effd53c0d02fced7e5aaa156766beb3519e6..5e8b2413b693c7be491f9a406cb52478e69f4f9a 100644
--- a/tests/basics/ordereddict1.py
+++ b/tests/basics/ordereddict1.py
@@ -2,7 +2,7 @@ try:
     from collections import OrderedDict
 except ImportError:
     try:
-        from _collections import OrderedDict
+        from ucollections import OrderedDict
     except ImportError:
         print("SKIP")
         import sys
diff --git a/tests/bench/var-8-namedtuple-1st.py b/tests/bench/var-8-namedtuple-1st.py
index f3f36f415ad8a8ce1b409a232a6a07fbd774612d..d862480a517fee44dfe647530228dd2839ec9053 100644
--- a/tests/bench/var-8-namedtuple-1st.py
+++ b/tests/bench/var-8-namedtuple-1st.py
@@ -1,5 +1,5 @@
 import bench
-from _collections import namedtuple
+from ucollections import namedtuple
 
 T = namedtuple("Tup", ["num", "bar"])
 
diff --git a/tests/bench/var-8.1-namedtuple-5th.py b/tests/bench/var-8.1-namedtuple-5th.py
index b6bdc8d7956cb086c6445d745008c3a8d4900824..0bcf66180320a01b6ed02f3429d55af816c05adb 100644
--- a/tests/bench/var-8.1-namedtuple-5th.py
+++ b/tests/bench/var-8.1-namedtuple-5th.py
@@ -1,5 +1,5 @@
 import bench
-from _collections import namedtuple
+from ucollections import namedtuple
 
 T = namedtuple("Tup", ["foo1", "foo2", "foo3", "foo4", "num"])
 
diff --git a/tests/io/buffered_writer.py b/tests/io/buffered_writer.py
index 0fe8a7730912bd9691694bc08e4bed8594e1b630..afeaa839c1aefc2dc45e5f9f15c6781b7750c999 100644
--- a/tests/io/buffered_writer.py
+++ b/tests/io/buffered_writer.py
@@ -1,4 +1,4 @@
-import _io as io
+import uio as io
 
 try:
     io.BytesIO
diff --git a/tests/io/stringio1.py b/tests/io/stringio1.py
index 22f561f2990910224bf4b204ac23f693bb1ea93e..a224c5b0c41768ec7fcca4381976bb6bda7c52e6 100644
--- a/tests/io/stringio1.py
+++ b/tests/io/stringio1.py
@@ -1,4 +1,4 @@
-import _io as io
+import uio as io
 
 a = io.StringIO()
 print('io.StringIO' in repr(a))
diff --git a/tests/io/stringio_with.py b/tests/io/stringio_with.py
index becb564dfdd7ad5d7aad48397c661a7054321a01..6dc48c89329c8073c87f7561aa678c40e5ed9fc8 100644
--- a/tests/io/stringio_with.py
+++ b/tests/io/stringio_with.py
@@ -1,4 +1,4 @@
-import _io as io
+import uio as io
 
 # test __enter__/__exit__
 with io.StringIO() as b:
diff --git a/tests/misc/print_exception.py b/tests/misc/print_exception.py
index 1d3ca4cf460cfefb7e61dd3761e29db40892ef14..80f7f441665ff30ffc5d960e2f3caf5ae5d72f81 100644
--- a/tests/misc/print_exception.py
+++ b/tests/misc/print_exception.py
@@ -1,4 +1,4 @@
-import _io as io # uPy does not have io module builtin
+import uio as io # uPy does not have io module builtin
 import sys
 if hasattr(sys, 'print_exception'):
     print_exception = sys.print_exception
diff --git a/tests/misc/recursive_data.py b/tests/misc/recursive_data.py
index 53fb30f9ffcdef5148a116755db4ea0e19e956c6..0de93acb891fdc58fd884c938f13aad0c4624305 100644
--- a/tests/misc/recursive_data.py
+++ b/tests/misc/recursive_data.py
@@ -1,5 +1,5 @@
 # This tests that printing recursive data structure doesn't lead to segfault.
-import _io as io
+import uio as io
 
 l = [1, 2, 3, None]
 l[-1] = l