diff --git a/CMakeLists.txt b/CMakeLists.txt
index f2f25578..ef7efaf4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -70,6 +70,7 @@ c4_add_library(ryml
         c4/yml/tag.cpp
         c4/yml/tree.hpp
         c4/yml/tree.cpp
+        c4/yml/version.hpp
         c4/yml/version.cpp
         c4/yml/writer.hpp
         c4/yml/yml.hpp