diff --git a/tree-sitter-tako/grammar.js b/tree-sitter-tako/grammar.js
index fafd1fd1..08981c21 100644
--- a/tree-sitter-tako/grammar.js
+++ b/tree-sitter-tako/grammar.js
@@ -64,7 +64,7 @@ module.exports = grammar({
   extras: ($) => [$.nesting_comment, $.single_line_comment, "\r", "\n", "\t", " "],
   rules: {
     // TODO: add the actual grammar rules
-    source_file: ($) => seq(optional($.shebang), optional($._non_empty_body)),
+    source_file: ($) => seq(optional($.shebang), separated_one(optional($._non_empty_body), $.heading)),
     _non_empty_body: ($) => separated_one($._statement, ';'),
     _statement: ($) => choice(
       $.block,
@@ -146,6 +146,7 @@ module.exports = grammar({
     // TODO: Add semver.
     shebang: (_) => seq('#!', /[^\n\r]*/),
     single_line_comment: (_) => seq('//', /.*/),
+    heading: (_) => /====*[^='"]*====*/,
     ...operators_gen(),
   }
 });
diff --git a/tree-sitter-tako/playground.sh b/tree-sitter-tako/playground.sh
new file mode 100755
index 00000000..46103bde
--- /dev/null
+++ b/tree-sitter-tako/playground.sh
@@ -0,0 +1 @@
+tree-sitter generate && tree-sitter build --wasm && tree-sitter playground
diff --git a/tree-sitter-tako/src/grammar.json b/tree-sitter-tako/src/grammar.json
index d151b6f4..2380a414 100644
--- a/tree-sitter-tako/src/grammar.json
+++ b/tree-sitter-tako/src/grammar.json
@@ -18,14 +18,43 @@
           ]
         },
         {
-          "type": "CHOICE",
+          "type": "SEQ",
           "members": [
             {
-              "type": "SYMBOL",
-              "name": "_non_empty_body"
+              "type": "CHOICE",
+              "members": [
+                {
+                  "type": "SYMBOL",
+                  "name": "_non_empty_body"
+                },
+                {
+                  "type": "BLANK"
+                }
+              ]
             },
             {
-              "type": "BLANK"
+              "type": "REPEAT",
+              "content": {
+                "type": "SEQ",
+                "members": [
+                  {
+                    "type": "SYMBOL",
+                    "name": "heading"
+                  },
+                  {
+                    "type": "CHOICE",
+                    "members": [
+                      {
+                        "type": "SYMBOL",
+                        "name": "_non_empty_body"
+                      },
+                      {
+                        "type": "BLANK"
+                      }
+                    ]
+                  }
+                ]
+              }
             }
           ]
         }
@@ -498,6 +527,10 @@
         }
       ]
     },
+    "heading": {
+      "type": "PATTERN",
+      "value": "====*[^='\"]*====*"
+    },
     "comma": {
       "type": "PREC_LEFT",
       "value": -1,
diff --git a/tree-sitter-tako/src/node-types.json b/tree-sitter-tako/src/node-types.json
index 44a36905..0de4f021 100644
--- a/tree-sitter-tako/src/node-types.json
+++ b/tree-sitter-tako/src/node-types.json
@@ -2661,6 +2661,10 @@
           "type": "has_type",
           "named": true
         },
+        {
+          "type": "heading",
+          "named": true
+        },
         {
           "type": "hex_literal",
           "named": true
@@ -2835,6 +2839,10 @@
     "type": "float_literal",
     "named": true
   },
+  {
+    "type": "heading",
+    "named": true
+  },
   {
     "type": "ident",
     "named": true