diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
index 29b65870fe29dee..fd79be491ab753a 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
@@ -48,6 +48,7 @@
   tree-sitter-json5 = lib.importJSON ./tree-sitter-json5.json;
   tree-sitter-jsonnet = lib.importJSON ./tree-sitter-jsonnet.json;
   tree-sitter-julia = lib.importJSON ./tree-sitter-julia.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 000000000000000..9dc266d8339de1d
--- /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": "f305d8e60a23a6f1765913f722a366ac4ccfa4a9",
+  "date": "2023-11-13T22:56:11-05:00",
+  "path": "/nix/store/sa71qzr4n3r620kgjn823wrwhsb2lnrj-tree-sitter-koka",
+  "sha256": "1p4m2hkp84mkw7p9637j2r1qjzxz9b5s87lqywgvw46b742nisqc",
+  "hash": "sha256-DOtoBTnLEL4f95gepMtKv3+JQxbyDJPu4bMSdCcUldw=",
+  "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 b2f301aee54a10a..33c8b836a0dc3d6 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -387,6 +387,10 @@ let
       orga = "szebniok";
       repo = "tree-sitter-wgsl";
     };
+    "tree-sitter-koka" = {
+      orga = "mtoohey31";
+      repo = "tree-sitter-koka";
+    };
   };
 
   allGrammars =