diff --git a/python/damask/_typehints.py b/python/damask/_typehints.py
index 793e09bc6..0b4a56a69 100644
--- a/python/damask/_typehints.py
+++ b/python/damask/_typehints.py
@@ -9,4 +9,6 @@ import numpy as np
 FloatSequence = Union[np.ndarray,Sequence[float]]
 IntSequence = Union[np.ndarray,Sequence[int]]
 FileHandle = Union[TextIO, str, Path]
-NumpyRngSeed = Union[int, IntSequence, np.random.SeedSequence, np.random.BitGenerator, np.random.Generator]
+NumpyRngSeed = Union[int, IntSequence, np.random.SeedSequence, np.random.Generator]
+# BitGenerator does not exists in older numpy versions
+#NumpyRngSeed = Union[int, IntSequence, np.random.SeedSequence, np.random.BitGenerator, np.random.Generator]