diff --git a/tests/test_tracebacks.py b/tests/test_tracebacks.py
index 69de280d11..2f692aefaa 100644
--- a/tests/test_tracebacks.py
+++ b/tests/test_tracebacks.py
@@ -14,7 +14,12 @@ def test_traceback_rich():
 
     assert "typer.run(main)" in result.stderr
     assert "print(name + 3)" in result.stderr
-    assert 'TypeError: can only concatenate str (not "int") to str' in result.stderr
+
+    # TODO: when deprecating Python 3.6, remove second option
+    assert (
+        'TypeError: can only concatenate str (not "int") to str' in result.stderr
+        or "TypeError: must be str, not int" in result.stderr
+    )
     assert "name = 'morty'" in result.stderr
 
 
@@ -30,7 +35,11 @@ def test_traceback_no_rich():
 
     assert "typer.run(main)" in result.stderr
     assert "print(name + 3)" in result.stderr
-    assert 'TypeError: can only concatenate str (not "int") to str' in result.stderr
+    # TODO: when deprecating Python 3.6, remove second option
+    assert (
+        'TypeError: can only concatenate str (not "int") to str' in result.stderr
+        or "TypeError: must be str, not int" in result.stderr
+    )
 
 
 def test_unmodified_traceback():
@@ -48,4 +57,8 @@ def test_unmodified_traceback():
     )
     assert "typer.main.get_command(broken_app)()" in result.stderr
     assert "print(name + 3)" in result.stderr
-    assert 'TypeError: can only concatenate str (not "int") to str' in result.stderr
+    # TODO: when deprecating Python 3.6, remove second option
+    assert (
+        'TypeError: can only concatenate str (not "int") to str' in result.stderr
+        or "TypeError: must be str, not int" in result.stderr
+    )