diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
index 5b3862082d8f..b3e325ffc9a6 100644
--- a/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/default.nix
@@ -17,6 +17,7 @@
   tree-sitter-devicetree = lib.importJSON ./tree-sitter-devicetree.json;
   tree-sitter-dockerfile = lib.importJSON ./tree-sitter-dockerfile.json;
   tree-sitter-dot = lib.importJSON ./tree-sitter-dot.json;
+  tree-sitter-eex = lib.importJSON ./tree-sitter-eex.json;
   tree-sitter-elisp = lib.importJSON ./tree-sitter-elisp.json;
   tree-sitter-elixir = lib.importJSON ./tree-sitter-elixir.json;
   tree-sitter-elm = lib.importJSON ./tree-sitter-elm.json;
diff --git a/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-eex.json b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-eex.json
new file mode 100644
index 000000000000..0bfb77c762fc
--- /dev/null
+++ b/pkgs/development/tools/parsing/tree-sitter/grammars/tree-sitter-eex.json
@@ -0,0 +1,11 @@
+{
+  "url": "https://github.com/connorlay/tree-sitter-eex",
+  "rev": "f742f2fe327463335e8671a87c0b9b396905d1d1",
+  "date": "2022-01-12T10:01:23-08:00",
+  "path": "/nix/store/an5vj0gnziy44ckklm9hxp9wbydisk4l-tree-sitter-eex",
+  "sha256": "19n07ywavwkh4p189d18wxhch45qgn094b7mkdymh60zr7cbmyjh",
+  "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 ad62530ee31d..63f749c890b4 100644
--- a/pkgs/development/tools/parsing/tree-sitter/update.nix
+++ b/pkgs/development/tools/parsing/tree-sitter/update.nix
@@ -224,6 +224,10 @@ let
       orga = "connorlay";
       repo = "tree-sitter-surface";
     };
+    "tree-sitter-eex" = {
+      orga = "connorlay";
+      repo = "tree-sitter-eex";
+    };
     "tree-sitter-heex" = {
       orga = "connorlay";
       repo = "tree-sitter-heex";