diff --git a/book/src/generated/lang-support.md b/book/src/generated/lang-support.md
index 16d841d7..5076db9c 100644
--- a/book/src/generated/lang-support.md
+++ b/book/src/generated/lang-support.md
@@ -273,7 +273,7 @@
 | spicedb | ✓ |  |  | ✓ |  |  |
 | sql | ✓ | ✓ |  |  | ✓ |  |
 | ssh_client_config | ✓ |  |  |  |  |  |
-| starlark | ✓ | ✓ | ✓ |  | ✓ | `starpls` |
+| starlark | ✓ | ✓ | ✓ |  | ✓ | `starpls`, `buck2` |
 | strace | ✓ |  |  |  |  |  |
 | strictdoc | ✓ |  |  | ✓ |  |  |
 | styx | ✓ | ✓ | ✓ |  | ✓ | `styx` |
diff --git a/languages.toml b/languages.toml
index ec3cc3db..eae80758 100644
--- a/languages.toml
+++ b/languages.toml
@@ -19,6 +19,7 @@ beancount-language-server = { command = "beancount-language-server" }
 bicep-langserver = { command = "bicep-langserver" }
 biome-lsp-proxy = { command = "biome", args = ["lsp-proxy"] }
 bitbake-language-server = { command = "bitbake-language-server" }
+buck2 = { command = "buck2", args = ["lsp"] }
 buf = { command = "buf", args = ["lsp", "serve", "--timeout", "0"] }
 c3-lsp = { command = "c3-lsp" }
 cairo-language-server = { command = "cairo-language-server", args = [] }
@@ -2923,10 +2924,21 @@ source = { git = "https://github.com/sogaiu/tree-sitter-clojure", rev = "e43eff8
 name = "starlark"
 scope = "source.starlark"
 injection-regex = "(starlark|bzl|bazel|buck)"
-file-types = ["bzl", "bazel", "star", { glob = "BUILD" }, { glob = "BUCK" }, { glob = "BUILD.*" }, { glob = "WORKSPACE" }, { glob = "WORKSPACE.bzlmod" }, { glob = "PACKAGE" }]
+file-types = [
+  "bzl",
+  "bazel",
+  "star",
+  "bxl", # Buck Extension Language
+  { glob = "BUILD" },
+  { glob = "BUCK" },
+  { glob = "BUILD.*" },
+  { glob = "WORKSPACE" },
+  { glob = "WORKSPACE.bzlmod" },
+  { glob = "PACKAGE" },
+]
 comment-token = "#"
 indent = { tab-width = 4, unit = "    " }
-language-servers = [ "starpls" ]
+language-servers = [ "starpls", "buck2" ]
 grammar = "python"
 
 [[language]]