diff --git a/README.md b/README.md
index 6cf33c6..d33951b 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ pytest -v tests/fast_pauli
 
 #### Configurable Build (Developers)
 ```bash
+python -m pip install scikit-build-core
 python -m pip install --no-build-isolation -ve ".[dev]" -C cmake.args="-DCMAKE_CXX_COMPILER=<compiler> + <other cmake flags>"
 pytest -v tests/fast_pauli # + other pytest flags
 ```
diff --git a/docs/index.rst b/docs/index.rst
index fe648a2..1aa7260 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -51,6 +51,7 @@ Build from Source (Custom Config)
 
    git clone git@github.com:qognitive/fast-pauli.git
    cd fast-pauli
+   python -m pip install scikit-build-core
    python -m pip install --no-build-isolation -ve ".[dev]" -C cmake.args="-DCMAKE_CXX_COMPILER=<compiler> + <other cmake flags>"
 
 Verify / Test Build