diff --git a/.clang-format b/.clang-format
index 6d4364b84d3314c7d0c7560a4112efac77800307..12396f6e5d3213ba955663342580f657f90e53d8 100644
--- a/.clang-format
+++ b/.clang-format
@@ -1,3 +1,8 @@
+#
+# ChimeraTK clang-format definition.
+#
+# Use with clang-format-14. Please refer to https://apt.llvm.org/ for installation instructions on older Ubuntu versions.
+#
 ---
 BasedOnStyle: LLVM
 AccessModifierOffset: '-1'