diff --git a/Library/Homebrew/os/mac.rb b/Library/Homebrew/os/mac.rb
index bc384da308..4f663d7f8f 100644
--- a/Library/Homebrew/os/mac.rb
+++ b/Library/Homebrew/os/mac.rb
@@ -207,6 +207,7 @@ module OS
       "8.3"   => { clang: "8.1", clang_build: 802 },
       "8.3.1" => { clang: "8.1", clang_build: 802 },
       "8.3.2" => { clang: "8.1", clang_build: 802 },
+      "8.3.3" => { clang: "8.1", clang_build: 802 },
     }.freeze
 
     def compilers_standard?