diff --git a/README.md b/README.md
index 543a0339e4..7397deb4cc 100644
--- a/README.md
+++ b/README.md
@@ -54,6 +54,7 @@ installation and postprocessing procedures. Its features include:
   * Compressible Navier-Stokes equations
   * Magnetohydrodynamics (MHD) equations
   * Multi-component compressible Euler and MHD equations
+  * Multi-ion compressible MHD equations
   * Linearized Euler and acoustic perturbation equations
   * Hyperbolic diffusion equations for elliptic problems
   * Lattice-Boltzmann equations (D2Q9 and D3Q27 schemes)