diff --git a/README.md b/README.md
index 1399887..5a3f49c 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ electromagnetic simulations.
 * Stretched-coordinate PML boundaries (SCPML)
 * Functional versions of most operators
 * Anisotropic media (eps_xx, eps_yy, eps_zz, mu_xx, ...)
+* Arbitrary distributions of perfect electric and magnetic conductors (PEC / PMC)
 
 This package does *not* provide a fast matrix solver, though by default
 ```fdfd_tools.solvers.generic(...)``` will call
diff --git a/fdfd_tools/__init__.py b/fdfd_tools/__init__.py
index d19a4b9..a4efa89 100644
--- a/fdfd_tools/__init__.py
+++ b/fdfd_tools/__init__.py
@@ -3,7 +3,7 @@ Electromagnetic FDFD simulation tools
 
 Tools for 3D and 2D Electromagnetic Finite Difference Frequency Domain (FDFD)
 simulations. These tools handle conversion of fields to/from vector form,
-creation of the wave operator matrix, stretched-coordinate PMLs,
+creation of the wave operator matrix, stretched-coordinate PMLs, PECs and PMCs,
 field conversion operators, waveguide mode operator, and waveguide mode
 solver.