diff --git a/Formula/dyff.rb b/Formula/dyff.rb
new file mode 100644
index 0000000..d3b097b
--- /dev/null
+++ b/Formula/dyff.rb
@@ -0,0 +1,16 @@
+class Dyff < Formula
+  version "v1.5.7"
+  desc "A diff tool for YAML files, and sometimes JSON."
+  homepage "https://github.com/meltwater/homebrew-fks"
+  url "https://github.com/meltwater/homebrew-fks/releases/download/dyff-#{version}/dyff-darwin-amd64.tar.gz"
+  sha256 "8c616383ef5d8e8127ce9e620464f88a2195ff0906378864df69405baea1f2ad"
+
+  def install
+    bin.install "dyff"
+  end
+
+  # Homebrew requires tests.
+  test do
+    assert_match "dyff version #{version}", shell_output("#{bin}/dyff version", 0)
+  end
+end
diff --git a/Formula/kustomize.rb b/Formula/kustomize.rb
new file mode 100644
index 0000000..284c5bd
--- /dev/null
+++ b/Formula/kustomize.rb
@@ -0,0 +1,16 @@
+class Kustomize < Formula
+  version "v5.0.1"
+  desc "Customize raw, template-free YAML files."
+  homepage "https://github.com/meltwater/homebrew-fks"
+  url "https://github.com/meltwater/homebrew-fks/releases/download/kustomize-#{version}/kustomize-darwin-amd64.tar.gz"
+  sha256 "4a2b9f7fad0355c8bea08da6dd9c48e790df5f357983280998d80b8dc7ad3def"
+
+  def install
+    bin.install "kustomize"
+  end
+
+  # Homebrew requires tests.
+  test do
+    assert_match "#{version}", shell_output("#{bin}/kustomize version", 0)
+  end
+end
diff --git a/README.md b/README.md
index 940d2ad..0ff7942 100644
--- a/README.md
+++ b/README.md
@@ -6,8 +6,10 @@ This [homebrew](https://brew.sh) tap is created for convenience. It ensures that
 
 Current CLI binaries in this tap:
 
+- dyff
 - kubectl
 - kops
+- kustomize
 - helm2
 - helm3
 - helmfile