diff --git a/extensions/ocaml/extension.toml b/extensions/ocaml/extension.toml
index 99f83d126307c20c9f61a7285706b602ce346fcb..0523ba83b6b8e87dd203884d6f2508b6cbbe9cb2 100644
--- a/extensions/ocaml/extension.toml
+++ b/extensions/ocaml/extension.toml
@@ -19,3 +19,7 @@ path = "grammars/ocaml"
 repository = "https://github.com/tree-sitter/tree-sitter-ocaml"
 commit = "0b12614ded3ec7ed7ab7933a9ba4f695ba4c342e"
 path = "grammars/interface"
+
+[grammars.dune]
+repository = "https://github.com/WHForks/tree-sitter-dune"
+commit = "b3f7882e1b9a1d8811011bf6f0de1c74c9c93949"
diff --git a/extensions/ocaml/languages/dune/config.toml b/extensions/ocaml/languages/dune/config.toml
new file mode 100644
index 0000000000000000000000000000000000000000..332e3f112ea5db52a5328882d3921c14e8efdd73
--- /dev/null
+++ b/extensions/ocaml/languages/dune/config.toml
@@ -0,0 +1,8 @@
+name = "Dune"
+grammar = "dune"
+path_suffixes = ["dune", "dune-project"]
+brackets = [
+  { start = "(", end = ")", close = true, newline = true },
+  { start = "\"", end = "\"", close = true, newline = false, not_in = ["string"] }
+]
+tab_size = 2
diff --git a/extensions/ocaml/languages/dune/highlights.scm b/extensions/ocaml/languages/dune/highlights.scm
new file mode 100644
index 0000000000000000000000000000000000000000..e7a21cd2c51c038962b12a2358e5aeddf4cd482d
--- /dev/null
+++ b/extensions/ocaml/languages/dune/highlights.scm
@@ -0,0 +1,5 @@
+(stanza_name) @function
+(field_name) @property
+(quoted_string) @string
+(multiline_string) @string
+(action_name) @keyword
diff --git a/extensions/ocaml/languages/dune/injections.scm b/extensions/ocaml/languages/dune/injections.scm
new file mode 100644
index 0000000000000000000000000000000000000000..441998290e76dfd76e6be1b509a2c903643dca22
--- /dev/null
+++ b/extensions/ocaml/languages/dune/injections.scm
@@ -0,0 +1,2 @@
+((ocaml_syntax) @injection.content
+ (#set! injection.language "ocaml"))