diff --git a/Lib/test/string_tests.py b/Lib/test/string_tests.py
index 24a4a57e59d..fca38c3ea06 100644
--- a/Lib/test/string_tests.py
+++ b/Lib/test/string_tests.py
@@ -1225,19 +1225,19 @@ class MixinStrUnicodeUserStringTest:
         # issue 11828
         s = 'hello'
         x = 'x'
-        self.assertRaisesRegexp(TypeError, r'^find\(', s.find,
+        self.assertRaisesRegex(TypeError, r'^find\(', s.find,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^rfind\(', s.rfind,
+        self.assertRaisesRegex(TypeError, r'^rfind\(', s.rfind,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^index\(', s.index,
+        self.assertRaisesRegex(TypeError, r'^index\(', s.index,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^rindex\(', s.rindex,
+        self.assertRaisesRegex(TypeError, r'^rindex\(', s.rindex,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^count\(', s.count,
+        self.assertRaisesRegex(TypeError, r'^count\(', s.count,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^startswith\(', s.startswith,
+        self.assertRaisesRegex(TypeError, r'^startswith\(', s.startswith,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'^endswith\(', s.endswith,
+        self.assertRaisesRegex(TypeError, r'^endswith\(', s.endswith,
                                 x, None, None, None)
 
 
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index 4e33a42b2b2..d074758c667 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -523,19 +523,19 @@ class BaseBytesTest(unittest.TestCase):
         # issue 11828
         b = self.type2test(b'hello')
         x = self.type2test(b'x')
-        self.assertRaisesRegexp(TypeError, r'\bfind\b', b.find,
+        self.assertRaisesRegex(TypeError, r'\bfind\b', b.find,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\brfind\b', b.rfind,
+        self.assertRaisesRegex(TypeError, r'\brfind\b', b.rfind,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\bindex\b', b.index,
+        self.assertRaisesRegex(TypeError, r'\bindex\b', b.index,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\brindex\b', b.rindex,
+        self.assertRaisesRegex(TypeError, r'\brindex\b', b.rindex,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\bcount\b', b.count,
+        self.assertRaisesRegex(TypeError, r'\bcount\b', b.count,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\bstartswith\b', b.startswith,
+        self.assertRaisesRegex(TypeError, r'\bstartswith\b', b.startswith,
                                 x, None, None, None)
-        self.assertRaisesRegexp(TypeError, r'\bendswith\b', b.endswith,
+        self.assertRaisesRegex(TypeError, r'\bendswith\b', b.endswith,
                                 x, None, None, None)