diff --git a/languages.toml b/languages.toml
index b494d9983..91c5da666 100644
--- a/languages.toml
+++ b/languages.toml
@@ -2512,8 +2512,8 @@ source = { git = "https://github.com/sogaiu/tree-sitter-clojure", rev = "e57c569
 [[language]]
 name = "starlark"
 scope = "source.starlark"
-injection-regex = "(starlark|bzl|bazel)"
-file-types = ["bzl", "bazel", "star", { glob = "BUILD" }, { glob = "BUILD.*" }, { glob = "Tiltfile" }, { glob = "WORKSPACE" }, { glob = "WORKSPACE.bzlmod" }]
+injection-regex = "(starlark|bzl|bazel|buck)"
+file-types = ["bzl", "bazel", "star", { glob = "BUILD" }, { glob = "BUCK" }, { glob = "BUILD.*" }, { glob = "Tiltfile" }, { glob = "WORKSPACE" }, { glob = "WORKSPACE.bzlmod" }]
 comment-token = "#"
 indent = { tab-width = 4, unit = "    " }
 language-servers = [ "starpls" ]