diff --git a/README.rst b/README.rst
index a9e9259..f891ffd 100644
--- a/README.rst
+++ b/README.rst
@@ -32,6 +32,12 @@ The recommended way to install ``stl-reader`` is via PyPI:
 
    pip install stl-reader
 
+Optionally with PyVista:
+
+.. code:: sh
+
+   pip install stl-reader[pyvista]
+
 You can also clone the repository and install it from source:
 
 .. code:: sh
diff --git a/pyproject.toml b/pyproject.toml
index 23684ad..f3a2b60 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -18,7 +18,6 @@ classifiers = [
   "Programming Language :: Python :: 3.12"
 ]
 dependencies = [
-  "pyvista",
   "numpy"
 ]
 description = "Read in STL files"
@@ -27,6 +26,9 @@ readme = "README.rst"
 requires-python = ">=3.8"
 version = "0.3.dev0"
 
+[project.optional-dependencies]
+pyvista = ["pyvista"]
+
 [tool.cibuildwheel]
 archs = ["auto64"]  # 64-bit only
 skip = "cp36-* cp37-* pp* *musllinux*"  # disable PyPy and musl-based wheels