diff --git a/Formula/ykman.rb b/Formula/ykman.rb
index 0636bddaf5703..9ee0b020a5a82 100644
--- a/Formula/ykman.rb
+++ b/Formula/ykman.rb
@@ -35,8 +35,8 @@ class Ykman < Formula
   end
 
   resource "cffi" do
-    url "https://files.pythonhosted.org/packages/2d/bf/960e5a422db3ac1a5e612cb35ca436c3fc985ed4b7ed13a1b4879006f450/cffi-1.13.2.tar.gz"
-    sha256 "599a1e8ff057ac530c9ad1778293c665cb81a791421f46922d80a86473c13346"
+    url "https://files.pythonhosted.org/packages/66/6a/98e023b3d11537a5521902ac6b50db470c826c682be6a8c661549cb7717a/cffi-1.14.4.tar.gz"
+    sha256 "1a465cbe98a7fd391d47dce4b8f7e5b921e6cd805ef421d04f5f66ba8f06086c"
   end
 
   resource "click" do