Index: dolfinx-mpc/python/pyproject.toml
===================================================================
--- dolfinx-mpc.orig/python/pyproject.toml	2025-09-10 14:50:12.004946620 +0200
+++ dolfinx-mpc/python/pyproject.toml	2025-09-10 14:51:34.895806725 +0200
@@ -21,6 +21,7 @@
       "petsc4py",
       "mpi4py",
       "fenics-dolfinx>=0.9.0",
+      "nanobind",
 ]
 
 [project.optional-dependencies]