diff --git a/Makefile b/Makefile
index 62eb5a3..ed641a0 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 # For generating .wasm files for parsers
 # See https://www.npmjs.com/package/web-tree-sitter
-LANGUAGES = agda bash c c-sharp clojure cpp css elm go haskell html java javascript json kotlin latex markdown php python query ruby rust scala scss sparql talon tsx typescript yaml
+LANGUAGES = agda bash c c-sharp clojure cpp css elm go hack haskell html java javascript json kotlin latex markdown php python query ruby rust scala scss sparql talon tsx typescript yaml
 
 
 # NOTE: Update the version number in the filepath for web-tree-sitter in package.json,
diff --git a/package.json b/package.json
index 17c7b7f..a1b6d20 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,7 @@
 		"onLanguage:csharp",
 		"onLanguage:elm",
 		"onLanguage:go",
+		"onLanguage:hack",
 		"onLanguage:haskell",
 		"onLanguage:html",
 		"onLanguage:java",
@@ -93,6 +94,7 @@
 		"tree-sitter-cpp": "^0.19.0",
 		"@elm-tooling/tree-sitter-elm": "github:elm-tooling/tree-sitter-elm#0aecfbf69f0c9bcdfada0f6f2c5398235c23949f",
 		"tree-sitter-go": "^0.19.0",
+		"tree-sitter-hack": "github:slackhq/tree-sitter-hack#b7bd6928532ada34dddb1dece4a158ab62c6e783",
 		"tree-sitter-haskell": "github:tree-sitter/tree-sitter-haskell#d6ccd2d9c40bdec29fee0027ef04fe5ff1ae4ceb",
 		"tree-sitter-html": "^0.19.0",
 		"tree-sitter-java": "github:tree-sitter/tree-sitter-java#ac14b4b1884102839455d32543ab6d53ae089ab7",
diff --git a/src/extension.ts b/src/extension.ts
index 3a00268..077870c 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -20,6 +20,7 @@ const languages: {
   css: { module: "tree-sitter-css" },
   elm: { module: "tree-sitter-elm" },
   go: { module: "tree-sitter-go" },
+  hack: { module: "tree-sitter-hack"},
   haskell: { module: "tree-sitter-haskell" },
   html: { module: "tree-sitter-html" },
   java: { module: "tree-sitter-java" },
diff --git a/yarn.lock b/yarn.lock
index 15f0fdb..2e5ad78 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2341,6 +2341,12 @@ tree-sitter-go@^0.19.0:
   dependencies:
     nan "^2.14.0"
 
+"tree-sitter-hack@github:slackhq/tree-sitter-hack#b7bd6928532ada34dddb1dece4a158ab62c6e783":
+  version "0.0.4"
+  resolved "https://codeload.github.com/slackhq/tree-sitter-hack/tar.gz/b7bd6928532ada34dddb1dece4a158ab62c6e783"
+  dependencies:
+    nan "^2.14.1"
+
 "tree-sitter-haskell@github:tree-sitter/tree-sitter-haskell#d6ccd2d9c40bdec29fee0027ef04fe5ff1ae4ceb":
   version "0.14.0"
   resolved "https://codeload.github.com/tree-sitter/tree-sitter-haskell/tar.gz/d6ccd2d9c40bdec29fee0027ef04fe5ff1ae4ceb"