diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
index a6b62afd0bcb2ca20bf81d27a7eb0e0ba59c12c8..880cd923c22acf001b39cf0b480a18c8e66b565f 100644
--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -1541,6 +1541,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 * [Developing Applications With Objective Caml](http://caml.inria.fr/pub/docs/oreilly-book/)
 * [Functional Programming in OCaml](https://www.cs.cornell.edu/courses/cs3110/2019sp/textbook/) - Michael R. Clarkson
+* [OCaml From the Ground Up](https://ocamlbook.org) - Daniil Baturin (HTML) (:construction: *in process*)
 * [OCaml Scientific Computing](https://ocaml.xyz/book/) - Liang Wang, Jianxin Zhao (HTML) (:construction: *in process*)
 * [Real World OCaml](https://dev.realworldocaml.org/toc.html)
 * [Think OCaml](http://greenteapress.com/thinkocaml/index.html) - Allen B. Downey and Nicholas Monje