diff --git a/rustfmt-format-diff/Cargo.toml b/rustfmt-format-diff/Cargo.toml
new file mode 100644
index 000000000000..a74c08616bd0
--- /dev/null
+++ b/rustfmt-format-diff/Cargo.toml
@@ -0,0 +1,21 @@
+[package]
+name = "rustfmt-format-diff"
+version = "0.4.0"
+authors = ["Nicholas Cameron <ncameron@mozilla.com>", "The Rustfmt developers"]
+description = "Run rustfmt against diff"
+repository = "https://github.com/rust-lang-nursery/rustfmt"
+readme = "README.md"
+license = "Apache-2.0/MIT"
+categories = ["development-tools"]
+
+[[bin]]
+name = "rustfmt-format-diff"
+
+[dependencies]
+env_logger = "0.4"
+getopts = "0.2"
+log = "0.3"
+regex = "0.2"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
\ No newline at end of file
diff --git a/src/bin/rustfmt-format-diff.rs b/rustfmt-format-diff/src/main.rs
similarity index 100%
rename from src/bin/rustfmt-format-diff.rs
rename to rustfmt-format-diff/src/main.rs
diff --git a/src/bin/test/bindgen.diff b/rustfmt-format-diff/src/test/bindgen.diff
similarity index 100%
rename from src/bin/test/bindgen.diff
rename to rustfmt-format-diff/src/test/bindgen.diff