diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
index 57152c24fe4af..53c06662793c3 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
@@ -51,6 +51,7 @@
   tree-sitter-jsonnet = lib.importJSON ./tree-sitter-jsonnet.json;
   tree-sitter-julia = lib.importJSON ./tree-sitter-julia.json;
   tree-sitter-just = lib.importJSON ./tree-sitter-just.json;
+  tree-sitter-koka = lib.importJSON ./tree-sitter-koka.json;
   tree-sitter-kotlin = lib.importJSON ./tree-sitter-kotlin.json;
   tree-sitter-latex = lib.importJSON ./tree-sitter-latex.json;
   tree-sitter-ledger = lib.importJSON ./tree-sitter-ledger.json;
diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-koka.json b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-koka.json
new file mode 100644
index 0000000000000..56153f9ac2a58
--- /dev/null
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-koka.json
@@ -0,0 +1,12 @@
+{
+  "url": "https://github.com/mtoohey31/tree-sitter-koka",
+  "rev": "96d070c3700692858035f3524cc0ad944cef2594",
+  "date": "2024-01-21T20:56:11-05:00",
+  "path": "/nix/store/n0cy7vhsiw6i2s9i2hzwcm0ddj7d4ffi-tree-sitter-koka",
+  "sha256": "1bxmflc8ynqpdkzwc74fqqcjhzkggkzxbzhbx0ji4g7kfknc0ldk",
+  "hash": "sha256-s1HA7HTzPBIl6Av+1f98b34oGcaOHMb/bBdbjxh1ta8=",
+  "fetchLFS": false,
+  "fetchSubmodules": false,
+  "deepClone": false,
+  "leaveDotGit": false
+}
diff --git a/pkgs/development/tools/parsing/tree-sitter/update.nix b/pkgs/development/tools/parsing/tree-sitter/update.nix
index 80d5f78845dd7..c4d64cbd25aa3 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -417,6 +417,10 @@ let
       orga = "gleam-lang";
       repo = "tree-sitter-gleam";
     };
+    "tree-sitter-koka" = {
+      orga = "mtoohey31";
+      repo = "tree-sitter-koka";
+    };
   };
 
   allGrammars =