diff --git a/docs/source_docs/user_guide/inputs/model_options.rst b/docs/source_docs/user_guide/inputs/model_options.rst
index d00510b6da1e8d7597e455411323e4000dd8a1d2..8057e4a91687c9e0e467c7c8fd3af52cd73fbdf1 100644
--- a/docs/source_docs/user_guide/inputs/model_options.rst
+++ b/docs/source_docs/user_guide/inputs/model_options.rst
@@ -73,6 +73,18 @@ The following inputs are defined using the ``mfix`` prefix.
 +---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
 | use_drag_in_godunov             | Include a drag term in the Godunov flux or (default) not              |   Bool      |  False       |
 +---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
+| godunov_ppm                     | When using Godunov, use piecewise parabolic (PPM) instead of          |   Bool      |  False       |
+|                                 | piecewise linear (PLM) reconstruction                                 |             |              |
++---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
+| godunov_include_diff_in_forcing | When using Godunov, include viscous/diffusive terms in forcing terms  |   Bool      |  True        |
++---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
+| godunov_use_forces_in_trans     | When using Godunov, add forcing terms in the construction of `trans`  |   Bool      |  False       |
+|                                 | velocities                                                            |             |              |
++---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
+| use_mac_phi_in_godunov          | When using Godunov, don't include the pressure gradient in the        |   Bool      |  False       |
+|                                 | forcing term passed into the godunov routine; instead use gradient of |             |              |
+|                                 | mac phi which contains the full pressure                              |             |              |
++---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
 | correction_small_volfrac        | Threshold volume fraction for correcting small cell velocity          |             |              |
 |                                 | at the end of the predictor and corrector                             |   Real      |  1.e-4       |
 +---------------------------------+-----------------------------------------------------------------------+-------------+--------------+
diff --git a/docs/source_docs/user_guide/inputs/multigrid-solvers.rst b/docs/source_docs/user_guide/inputs/multigrid-solvers.rst
index c8d248548d274ad99f113510e4cf37700c7830c9..4eea8047cc39818671bfde35aba231db33bd5971 100644
--- a/docs/source_docs/user_guide/inputs/multigrid-solvers.rst
+++ b/docs/source_docs/user_guide/inputs/multigrid-solvers.rst
@@ -226,6 +226,8 @@ The following inputs are valid when using ``BoomerAMG`` as a preconditioner or s
 +-----------------------------------+-----------------------------------------------------------------------+-------------+--------------+
 | overwrite_existing_matrix_files   |  Over-write existing matrix files                                     |    Bool     |   false      |
 +-----------------------------------+-----------------------------------------------------------------------+-------------+--------------+
+| write_matrix_files                |  Write out matrix into text files                                     |    Bool     |   false      |
++-----------------------------------+-----------------------------------------------------------------------+-------------+--------------+
 
 
 .. note::