--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -21,7 +21,7 @@
 ]
 dependencies = [
       "numpy>=1.21",
-      "cffi<1.17",                           # See https://github.com/FEniCS/dolfinx/issues/3340
+      "cffi",
       "mpi4py",
       "fenics-basix>=0.9.0,<0.10.0",
       "fenics-ffcx>=0.9.0,<0.10.0",