diff --git a/ndonnx/_funcs.py b/ndonnx/_funcs.py
index 47a4c9f..1ebb21c 100644
--- a/ndonnx/_funcs.py
+++ b/ndonnx/_funcs.py
@@ -550,7 +550,7 @@ def matrix_transpose(x):
     return _unary(x.dtype._ops.matrix_transpose, x)
 
 
-def tensordot(x, y, axes=2):
+def tensordot(x, y, /, *, axes=2):
     if (out := x.dtype._ops.tensordot(x, y, axes)) is not NotImplemented:
         return out
     if (out := y.dtype._ops.tensordot(x, y, axes)) is not NotImplemented:
@@ -640,7 +640,7 @@ def permute_dims(x, axes):
     )
 
 
-def repeat(x, repeats, axis=None):
+def repeat(x, repeats, /, *, axis=None):
     if (out := x.dtype._ops.repeat(x, repeats, axis)) is not NotImplemented:
         return out
     raise UnsupportedOperationError(f"Unsupported operand type for repeat: '{x.dtype}'")