diff --git a/lib/tailwindcss/upstream.rb b/lib/tailwindcss/upstream.rb
index 6502cde6..4b618de4 100644
--- a/lib/tailwindcss/upstream.rb
+++ b/lib/tailwindcss/upstream.rb
@@ -1,7 +1,7 @@
 module Tailwindcss
   # constants describing the upstream tailwindcss project
   module Upstream
-    VERSION = "v3.4.6"
+    VERSION = "v3.4.7"
 
     # rubygems platform name => upstream release filename
     NATIVE_PLATFORMS = {
diff --git a/package/tailwindcss-v3.4.7-checksums.txt b/package/tailwindcss-v3.4.7-checksums.txt
new file mode 100644
index 00000000..0d5079d3
--- /dev/null
+++ b/package/tailwindcss-v3.4.7-checksums.txt
@@ -0,0 +1,6 @@
+8f8b5cd32fc35843ec24bbcdb214e972df6a9c485bf4d4fd049140fbcc766bcc  tailwindcss-macos-x64
+0eda3bc8fe90506b7b9e5cb930312042730b76a7f18026d19414d48fbb3100ed  tailwindcss-macos-arm64
+3c2321e66718f39e48388707ce8b587946338f82ef3d636c8ee19670514d3394  tailwindcss-linux-x64
+4146a6f534fffb27f95de9926d7806a6e432eeb7e55cb8850a57c4e062689c2b  tailwindcss-linux-arm64
+85c4c71618f0bfcdb0edf246ed6ee394a7addb8af34ed7dbdce9298279243994  tailwindcss-linux-armv7
+e6891c3d181314b7d78382fe93121ff8957a9dbb1132a47afb064c0ed1f906e4  tailwindcss-windows-x64.exe
diff --git a/rakelib/package.rake b/rakelib/package.rake
index 095ef445..7cab2924 100644
--- a/rakelib/package.rake
+++ b/rakelib/package.rake
@@ -115,8 +115,12 @@ end
 
 desc "Validate checksums for tailwindcss binaries"
 task "check" => exepaths do
-  sha_filename = "sha256sums.txt"
-  sha_url = tailwindcss_download_url(sha_filename)
+  sha_filename = File.absolute_path("../package/tailwindcss-#{Tailwindcss::Upstream::VERSION}-checksums.txt", __dir__)
+  sha_url = if File.exist?(sha_filename)
+    sha_filename
+  else
+    sha_url = tailwindcss_download_url("sha256sums.txt")
+  end
   gemspec = TAILWINDCSS_RAILS_GEMSPEC
 
   checksums = URI.open(sha_url).each_line.map do |line|