diff --git a/docs/source/devguide/styleguide.rst b/docs/source/devguide/styleguide.rst
index 562b75e89..a46744a3f 100644
--- a/docs/source/devguide/styleguide.rst
+++ b/docs/source/devguide/styleguide.rst
@@ -12,6 +12,14 @@ adding new code in OpenMC.
 C++
 ---
 
+.. important:: To ensure consistent styling with little effort, this project
+    uses `clang-format <https://clang.llvm.org/docs/ClangFormat.html>`_. The
+    repository contains a ``.clang-format`` file that can be used to
+    automatically apply the style rules that are described below. The easiest
+    way to use clang-format is through a plugin/extension for your editor/IDE
+    that automatically runs clang-format using the ``.clang-format`` file
+    whenever a file is saved.
+
 Indentation
 -----------