diff --git a/WORKSPACE b/WORKSPACE
new file mode 100644
index 0000000..1d303db
--- /dev/null
+++ b/WORKSPACE
@@ -0,0 +1,21 @@
+workspace(name = "roughtime")
+
+git_repository(
+    name = "boringssl",
+    commit = "9712e98fd90609a97e255eeaa5ae13c2db022620", # Sept 1st, 2016.
+    remote = "https://boringssl.googlesource.com/boringssl",
+)
+
+git_repository(
+    name = "protobuf",
+    commit = "v3.0.0",
+    remote = "https://github.com/google/protobuf",
+)
+
+new_http_archive(
+    name = "gtest",
+    url = "https://github.com/google/googletest/archive/release-1.7.0.tar.gz",
+    sha256 = "f73a6546fdf9fce9ff93a5015e0333a8af3062a152a9ad6bcb772c96687016cc",
+    build_file = "gtest.BUILD",
+    strip_prefix = "googletest-release-1.7.0",
+)