diff --git a/tidy3d/components/medium.py b/tidy3d/components/medium.py
index ac29f31d3..7f29ebb74 100644
--- a/tidy3d/components/medium.py
+++ b/tidy3d/components/medium.py
@@ -1623,6 +1623,8 @@ def from_nk(cls, n: float, k: float, freq: float, **kwargs):
             Imaginary part of refrative index.
         freq : float
             Frequency to evaluate permittivity at (Hz).
+        kwargs: dict
+            Keyword arguments passed to the medium construction.
 
         Returns
         -------
@@ -2397,6 +2399,8 @@ def from_nk(
         interp_method : :class:`.InterpMethod`, optional
             Interpolation method to obtain permittivity values that are not supplied
             at the Yee grids.
+        kwargs: dict
+            Keyword arguments passed to the medium construction.
 
         Note
         ----
@@ -4062,6 +4066,8 @@ def from_nk(cls, n: float, k: float, freq: float, **kwargs):
             Imaginary part of refrative index.
         freq : float
             Frequency to evaluate permittivity at (Hz).
+        kwargs: dict
+            Keyword arguments passed to the medium construction.
 
         Returns
         -------
@@ -4100,6 +4106,7 @@ def from_nk(cls, n: float, k: float, freq: float, **kwargs):
             coeffs=[
                 (eps_i, fp, delta_p),
             ],
+            **kwargs,
         )
 
 
@@ -6487,6 +6494,8 @@ def medium_from_nk(n: float, k: float, freq: float, **kwargs) -> Union[Medium, L
         Imaginary part of refrative index.
     freq : float
         Frequency to evaluate permittivity at (Hz).
+    kwargs: dict
+        Keyword arguments passed to the medium construction.
 
     Returns
     -------