diff --git a/pkgs/applications/editors/vim/plugins/nvim-treesitter/generated.nix b/pkgs/applications/editors/vim/plugins/nvim-treesitter/generated.nix
index 1785c57284d0..6dec05584665 100644
--- a/pkgs/applications/editors/vim/plugins/nvim-treesitter/generated.nix
+++ b/pkgs/applications/editors/vim/plugins/nvim-treesitter/generated.nix
@@ -2386,6 +2386,17 @@
     };
     meta.homepage = "https://github.com/rescript-lang/tree-sitter-rescript";
   };
+  river = buildGrammar {
+    language = "river";
+    version = "0.0.0+rev=eafcdc5";
+    src = fetchFromGitHub {
+      owner = "grafana";
+      repo = "tree-sitter-river";
+      rev = "eafcdc5147f985fea120feb670f1df7babb2f79e";
+      hash = "sha256-fhuIO++hLr5DqqwgFXgg8QGmcheTpYaYLMo7117rjyk=";
+    };
+    meta.homepage = "https://github.com/grafana/tree-sitter-river";
+  };
   rnoweb = buildGrammar {
     language = "rnoweb";
     version = "0.0.0+rev=1a74dc0";
diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
index c9faf8a788f8..d4a5de263d2a 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
@@ -82,6 +82,7 @@
   tree-sitter-r = lib.importJSON ./tree-sitter-r.json;
   tree-sitter-regex = lib.importJSON ./tree-sitter-regex.json;
   tree-sitter-rego = lib.importJSON ./tree-sitter-rego.json;
+  tree-sitter-river = lib.importJSON ./tree-sitter-river.json;
   tree-sitter-rst = lib.importJSON ./tree-sitter-rst.json;
   tree-sitter-ruby = lib.importJSON ./tree-sitter-ruby.json;
   tree-sitter-rust = lib.importJSON ./tree-sitter-rust.json;
diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-river.json b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-river.json
new file mode 100644
index 000000000000..9b98afddeef0
--- /dev/null
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-river.json
@@ -0,0 +1,12 @@
+{
+  "url": "https://github.com/grafana/tree-sitter-river",
+  "rev": "eafcdc5147f985fea120feb670f1df7babb2f79e",
+  "date": "2023-11-22T14:48:13+01:00",
+  "path": "/nix/store/6wwv45dv3lgyzng2hryadamp061yzx4i-tree-sitter-river",
+  "sha256": "0acgxdgdffya5jc8d9ck2xrac0gi41w1a85cm91vwbm1xwxqh6vy",
+  "hash": "sha256-fhuIO++hLr5DqqwgFXgg8QGmcheTpYaYLMo7117rjyk=",
+  "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 0503419068c3..3c45e4b74089 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -451,6 +451,10 @@ let
       orga = "glehmann";
       repo = "tree-sitter-earthfile";
     };
+    "tree-sitter-river" = {
+      orga = "grafana";
+      repo = "tree-sitter-river";
+    };
   };
 
   allGrammars =