diff --git a/Formula/p/plank.rb b/Formula/p/plank.rb
index c2c7c2c122f2f..0e6212e5e38b1 100644
--- a/Formula/p/plank.rb
+++ b/Formula/p/plank.rb
@@ -26,6 +26,12 @@ class Plank < Formula
 
   depends_on xcode: ["11.3", :build]
 
+  # fix build failures, upstream pr ref, https://github.com/pinterest/plank/pull/301
+  patch do
+    url "https://raw.githubusercontent.com/Homebrew/formula-patches/65b5a59920d2e06d62ce7fa0a9d7a6fcc72aa23d/plank/1.6.patch"
+    sha256 "782de4c235f03d5997c88506cd02e1cf97e5793fecf0e3bbff25d62f5393412a"
+  end
+
   def install
     system "make", "install", "PREFIX=#{prefix}"
   end