diff --git a/Formula/fonttools.rb b/Formula/fonttools.rb
index 36ea36e703..43c2b861a6 100644
--- a/Formula/fonttools.rb
+++ b/Formula/fonttools.rb
@@ -3,8 +3,8 @@ class Fonttools < Formula
 
   desc "Library for manipulating fonts"
   homepage "https://github.com/fonttools/fonttools"
-  url "https://github.com/fonttools/fonttools/releases/download/3.37.0/fonttools-3.37.0.zip"
-  sha256 "a1a7f9cce8184d7d5de8d1fc3f6611ba0eca33f038a27710675ec4ddb099c7ad"
+  url "https://github.com/fonttools/fonttools/releases/download/3.37.3/fonttools-3.37.3.zip"
+  sha256 "c898a455a39afbe6707bc17a0e4f720ebe2087fec67683e7c86a13183078204d"
   head "https://github.com/fonttools/fonttools.git"
 
   bottle do