diff --git a/tests/commands/install_uninstall_test.py b/tests/commands/install_uninstall_test.py
index ad8d2456..d00d55d7 100644
--- a/tests/commands/install_uninstall_test.py
+++ b/tests/commands/install_uninstall_test.py
@@ -118,7 +118,7 @@ def test_uninstall(tempdir_factory):
 
 
 def _get_commit_output(tempdir_factory, touch_file='foo', **kwargs):
-    cmd_output('touch', touch_file)
+    open(touch_file, 'a').close()
     cmd_output('git', 'add', touch_file)
     return cmd_output_mocked_pre_commit_home(
         'git', 'commit', '-am', 'Commit!', '--allow-empty',
diff --git a/tests/conftest.py b/tests/conftest.py
index 140463b1..9813e9ac 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -68,7 +68,7 @@ def _make_conflict():
 def in_merge_conflict(tempdir_factory):
     path = make_consuming_repo(tempdir_factory, 'script_hooks_repo')
     with cwd(path):
-        cmd_output('touch', 'dummy')
+        open('dummy', 'a').close()
         cmd_output('git', 'add', 'dummy')
         cmd_output('git', 'commit', '-m', 'Add config.')
 
diff --git a/tests/make_archives_test.py b/tests/make_archives_test.py
index f3636b53..5aa303f7 100644
--- a/tests/make_archives_test.py
+++ b/tests/make_archives_test.py
@@ -20,13 +20,13 @@ def test_make_archive(tempdir_factory):
     git_path = git_dir(tempdir_factory)
     # Add a files to the git directory
     with cwd(git_path):
-        cmd_output('touch', 'foo')
+        open('foo', 'a').close()
         cmd_output('git', 'add', '.')
         cmd_output('git', 'commit', '-m', 'foo')
         # We'll use this sha
         head_sha = get_head_sha('.')
         # And check that this file doesn't exist
-        cmd_output('touch', 'bar')
+        open('bar', 'a').close()
         cmd_output('git', 'add', '.')
         cmd_output('git', 'commit', '-m', 'bar')
 
diff --git a/tests/store_test.py b/tests/store_test.py
index 26857965..1bbcf44a 100644
--- a/tests/store_test.py
+++ b/tests/store_test.py
@@ -46,7 +46,7 @@ def test_store_require_created(store):
     # Should create the store directory
     assert os.path.exists(store.directory)
     # Should create a README file indicating what the directory is about
-    with io.open(os.path.join(store.directory, 'README'), 'r') as readme_file:
+    with io.open(os.path.join(store.directory, 'README')) as readme_file:
         readme_contents = readme_file.read()
         for text_line in (
             'This directory is maintained by the pre-commit project.',
@@ -73,7 +73,7 @@ def test_does_not_recreate_if_directory_already_exists(store):
     # Note: we're intentionally leaving out the README file.  This is so we can
     # know that `Store` didn't call create
     os.mkdir(store.directory)
-    io.open(store.db_path, 'a+').close()
+    open(store.db_path, 'a').close()
     # Call require_created, this should not call create
     store.require_created()
     assert not os.path.exists(os.path.join(store.directory, 'README'))