diff --git a/lockfile.json b/lockfile.json
index 8348c4cf4..73f1ccc36 100644
--- a/lockfile.json
+++ b/lockfile.json
@@ -192,7 +192,7 @@
     "revision": "5e66e961eee421786bdda8495ed1db045e06b5fe"
   },
   "hack": {
-    "revision": "b7bd6928532ada34dddb1dece4a158ab62c6e783"
+    "revision": "b1c41e4b82c625cc33ddb8701f6aa5a09c72fcf5"
   },
   "hare": {
     "revision": "3d4af179414525a35dd069ba0208c9b71093d8b3"
diff --git a/lua/nvim-treesitter/parsers.lua b/lua/nvim-treesitter/parsers.lua
index c55bc973a..8f6a83ed0 100644
--- a/lua/nvim-treesitter/parsers.lua
+++ b/lua/nvim-treesitter/parsers.lua
@@ -614,7 +614,7 @@ list.graphql = {
 list.hack = {
   install_info = {
     url = "https://github.com/slackhq/tree-sitter-hack",
-    files = { "src/parser.c", "src/scanner.cc" },
+    files = { "src/parser.c", "src/scanner.c" },
   },
 }