diff --git a/pandas/conftest.py b/pandas/conftest.py
index 0717f478e2782..f7d30d537b358 100644
--- a/pandas/conftest.py
+++ b/pandas/conftest.py
@@ -878,6 +878,6 @@ def index_or_series(request):
 
     List item 0 has incompatible type "Type[Series]"; expected "Type[PandasObject]"
 
-    See GH#?????
+    See GH#29725
     """
     return request.param
diff --git a/pandas/tests/arithmetic/test_numeric.py b/pandas/tests/arithmetic/test_numeric.py
index 77713deada44a..9733d589ee93b 100644
--- a/pandas/tests/arithmetic/test_numeric.py
+++ b/pandas/tests/arithmetic/test_numeric.py
@@ -33,7 +33,7 @@ def adjust_negative_zero(zero, expected):
 
 # TODO: remove this kludge once mypy stops giving false positives here
 # List comprehension has incompatible type List[PandasObject]; expected List[RangeIndex]
-#  See GH#?????
+#  See GH#29725
 ser_or_index: List[Any] = [pd.Series, pd.Index]
 lefts: List[Any] = [pd.RangeIndex(10, 40, 10)]
 lefts.extend(
diff --git a/pandas/tests/test_strings.py b/pandas/tests/test_strings.py
index c00e792fb210f..3c97b75ecfa0c 100644
--- a/pandas/tests/test_strings.py
+++ b/pandas/tests/test_strings.py
@@ -666,7 +666,7 @@ def test_str_cat_align_mixed_inputs(self, join):
 
     index_or_series2 = [Series, Index]  # type: ignore
     # List item 0 has incompatible type "Type[Series]"; expected "Type[PandasObject]"
-    # See GH#>????
+    # See GH#29725
 
     @pytest.mark.parametrize("other", index_or_series2)
     def test_str_cat_all_na(self, index_or_series, other):