diff --git a/Formula/r/ruff.rb b/Formula/r/ruff.rb
index a58da32c3fbd2..ca202b0a7aa23 100644
--- a/Formula/r/ruff.rb
+++ b/Formula/r/ruff.rb
@@ -1,19 +1,19 @@
 class Ruff < Formula
   desc "Extremely fast Python linter, written in Rust"
   homepage "https://docs.astral.sh/ruff/"
-  url "https://github.com/astral-sh/ruff/archive/refs/tags/v0.3.7.tar.gz"
-  sha256 "3adb76aebeb24c2358f51183fbe7a981e0d45c11af2afce6ca67f985dab3b900"
+  url "https://github.com/astral-sh/ruff/archive/refs/tags/v0.4.0.tar.gz"
+  sha256 "a6bc0dd542089d8ff30a76a17970b09fe508f01dcce17da3ce790e9911674435"
   license "MIT"
   head "https://github.com/astral-sh/ruff.git", branch: "main"
 
   bottle do
-    sha256 cellar: :any_skip_relocation, arm64_sonoma:   "73fde7ae4f139afe76dd2cf701d0a4a88acccd3d22ec631e617b3929ed67bbf6"
-    sha256 cellar: :any_skip_relocation, arm64_ventura:  "3e2429a3e51e4a880558ee0b8543c0521c529132211f2ead106682f08bdd131d"
-    sha256 cellar: :any_skip_relocation, arm64_monterey: "e5e1acb247f286e0ea23e471985a0f68b9277c030c547b75ce1927c5343074bb"
-    sha256 cellar: :any_skip_relocation, sonoma:         "967dd950de1844b87c20813ea0aadf5f61dafe6426714931244bd915e0f3478f"
-    sha256 cellar: :any_skip_relocation, ventura:        "449dc4124a1c9c9add2f2c5794df2875a8c27015bee05867235e794898cee9b7"
-    sha256 cellar: :any_skip_relocation, monterey:       "d59fa7ef035af36d2c52e2fb22499f95422a51d073f655203f55b0aa2acb719d"
-    sha256 cellar: :any_skip_relocation, x86_64_linux:   "6735bf78699715883669686c294309c3e82d787a5fd6964413a8660257de2d1d"
+    sha256 cellar: :any_skip_relocation, arm64_sonoma:   "bb28efc86064760fe85fe545391cbe8e337fac75866edc98b5dd4e81a10f5afa"
+    sha256 cellar: :any_skip_relocation, arm64_ventura:  "7bafddfbf89eaae73906801b92c7105189aab6eeb13736f26fac8eae3b5aa007"
+    sha256 cellar: :any_skip_relocation, arm64_monterey: "e0541db2ac1044dc9a9c23139ae06d07e3d18058edf2a09bb003aa63217e357b"
+    sha256 cellar: :any_skip_relocation, sonoma:         "5e88e0fdd6ff171b3c660139268de30ead83e99c66dd2b5419816253ee731339"
+    sha256 cellar: :any_skip_relocation, ventura:        "846b50706acefd208f78f9d1009d376275ca04abfbcfa7d973abd6a603477a52"
+    sha256 cellar: :any_skip_relocation, monterey:       "2d7c3cf9f2af335b4624abb7527d68cb69c3af0ce85deb9611d7ed3bdf3cf10c"
+    sha256 cellar: :any_skip_relocation, x86_64_linux:   "51255696ff4f1f52480a9682ffef1a45004d221aa70dca34e3c3defea2472e29"
   end
 
   depends_on "rust" => :build