diff --git a/README.md b/README.md
index 42de8837..10f0147e 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,12 @@ Below is a high-level overview of the project structure and capabilities we are
 * CMake `>= 3.15`
 * HDF5
 * Boost
-* Doxygen (optional, documentation building is skipped if missing)
-
+* Additional requirements for building the documentation (optional)
+    * Doxygen
+    * Graphviz
+* Additional requirements for developers (mode `dev`)
+    * cppcheck
+    * clang-format
 
 # Building and installing
 
@@ -132,4 +136,4 @@ of Energy and the U.S. Government consequently retains certain rights.  As
 such, the U.S. Government has been granted for itself and others acting on
 its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the
 Software to reproduce, distribute copies to the public, prepare derivative 
-works, and perform publicly and display publicly, and to permit others to do so.
\ No newline at end of file
+works, and perform publicly and display publicly, and to permit others to do so.