diff --git a/.gitmodules b/.gitmodules
index be6b64f..4ec5099 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "third_party/pnacl-subzero"]
 	path = third_party/pnacl-subzero
 	url = https://chromium.googlesource.com/native_client/pnacl-subzero
+[submodule "third_party/googletest"]
+	path = third_party/googletest
+	url = https://github.com/google/googletest.git
diff --git a/third_party/googletest b/third_party/googletest
new file mode 160000
index 0000000..ecd5308
--- /dev/null
+++ b/third_party/googletest
@@ -0,0 +1 @@
+Subproject commit ecd530865cefdfa7dea58e84f6aa1b548950363d