diff --git a/spec/python/test_eof_exception_bytes.py b/spec/python/test_eof_exception_bytes.py
index 7ed3f1316..d0a10f0bf 100644
--- a/spec/python/test_eof_exception_bytes.py
+++ b/spec/python/test_eof_exception_bytes.py
@@ -3,8 +3,15 @@
 
 from eof_exception_bytes import EofExceptionBytes
 
+# Python 2 has only assertRaisesRegexp method
+# Python 3.11 and below have both assertRaisesRegex and assertRaisesRegexp
+# Python 2.12 and above has only assertRaisesRegex
+# The tests run on both Python 2 & 3, so we add missing method for compatibility
+if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
+    setattr(unittest.TestCase, 'assertRaisesRegex', unittest.TestCase.assertRaisesRegexp)
+
 class TestEofExceptionBytes(unittest.TestCase):
     def test_eof_exception_bytes(self):
-        with self.assertRaisesRegexp(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
+        with self.assertRaisesRegex(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
             with EofExceptionBytes.from_file('src/term_strz.bin') as r:
                 pass
diff --git a/spec/python/test_eof_exception_u4.py b/spec/python/test_eof_exception_u4.py
index 261c35c9c..cc05e9f67 100644
--- a/spec/python/test_eof_exception_u4.py
+++ b/spec/python/test_eof_exception_u4.py
@@ -3,8 +3,15 @@
 
 from eof_exception_u4 import EofExceptionU4
 
+# Python 2 has only assertRaisesRegexp method
+# Python 3.11 and below have both assertRaisesRegex and assertRaisesRegexp
+# Python 2.12 and above has only assertRaisesRegex
+# The tests run on both Python 2 & 3, so we add missing method for compatibility
+if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
+    setattr(unittest.TestCase, 'assertRaisesRegex', unittest.TestCase.assertRaisesRegexp)
+
 class TestEofExceptionU4(unittest.TestCase):
     def test_eof_exception_u4(self):
-        with self.assertRaisesRegexp(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
+        with self.assertRaisesRegex(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
             with EofExceptionU4.from_file('src/term_strz.bin') as r:
                 pass
diff --git a/spec/python/test_eos_exception_bytes.py b/spec/python/test_eos_exception_bytes.py
index 92543f87a..c816669ec 100644
--- a/spec/python/test_eos_exception_bytes.py
+++ b/spec/python/test_eos_exception_bytes.py
@@ -3,8 +3,15 @@
 
 from eos_exception_bytes import EosExceptionBytes
 
+# Python 2 has only assertRaisesRegexp method
+# Python 3.11 and below have both assertRaisesRegex and assertRaisesRegexp
+# Python 2.12 and above has only assertRaisesRegex
+# The tests run on both Python 2 & 3, so we add missing method for compatibility
+if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
+    setattr(unittest.TestCase, 'assertRaisesRegex', unittest.TestCase.assertRaisesRegexp)
+
 class TestEosExceptionBytes(unittest.TestCase):
     def test_eos_exception_bytes(self):
-        with self.assertRaisesRegexp(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
+        with self.assertRaisesRegex(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
             with EosExceptionBytes.from_file('src/term_strz.bin') as r:
                 pass
diff --git a/spec/python/test_eos_exception_u4.py b/spec/python/test_eos_exception_u4.py
index f7e3d2795..6d8011074 100644
--- a/spec/python/test_eos_exception_u4.py
+++ b/spec/python/test_eos_exception_u4.py
@@ -3,8 +3,15 @@
 
 from eos_exception_u4 import EosExceptionU4
 
+# Python 2 has only assertRaisesRegexp method
+# Python 3.11 and below have both assertRaisesRegex and assertRaisesRegexp
+# Python 2.12 and above has only assertRaisesRegex
+# The tests run on both Python 2 & 3, so we add missing method for compatibility
+if not hasattr(unittest.TestCase, 'assertRaisesRegex'):
+    setattr(unittest.TestCase, 'assertRaisesRegex', unittest.TestCase.assertRaisesRegexp)
+
 class TestEosExceptionU4(unittest.TestCase):
     def test_eos_exception_u4(self):
-        with self.assertRaisesRegexp(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
+        with self.assertRaisesRegex(EOFError, "^requested \d+ bytes, but only \d+ bytes available$"):
             with EosExceptionU4.from_file('src/term_strz.bin') as r:
                 pass