diff --git a/etc/crates-graph.py b/etc/crates-graph.py
new file mode 100755
index 00000000000..7970c94119e
--- /dev/null
+++ b/etc/crates-graph.py
@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+
+# Copyright 2013 The Servo Project Developers. See the COPYRIGHT
+# file at the top-level directory of this distribution.
+#
+# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+# option. This file may not be copied, modified, or distributed
+# except according to those terms.
+
+import json
+import os
+import subprocess
+import sys
+
+
+def main(crate=None):
+    os.chdir(os.path.join(os.path.dirname(__file__), ".."))
+    meta = json.loads(subprocess.check_output(["cargo", "metadata", "--format-version", "1"]))
+    graph = {}
+    for package in meta["packages"]:
+        if package["source"] is None:  # Lives in this repo
+            for dependency in package["dependencies"]:
+                if dependency["source"] is None:  # Also lives in this repo
+                    graph.setdefault(package["name"], []).append(dependency["name"])
+
+    if crate:
+        filtered = {}
+        seen = set()
+
+        def traverse(name):
+            if name not in seen:
+                seen.add(name)
+                for dependency in graph.get(name, []):
+                    filtered.setdefault(name, []).append(dependency)
+                    traverse(dependency)
+        traverse(crate)
+    else:
+        filtered = graph
+    print("// This is in Graphviz DOT format.")
+    print("// Use the 'dot' or 'xdot' tool to visualize.")
+    print('digraph "local crates" {')
+    for package, dependencies in filtered.items():
+        for dependency in dependencies:
+            print('  "%s" -> "%s";' % (package, dependency))
+    print("}")
+
+
+if __name__ == "__main__":
+    sys.exit(main(*sys.argv[1:]))