diff --git a/.gitmodules b/.gitmodules
index 38368bc25bf..c08e1f13a16 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -88,3 +88,9 @@
 [submodule "src/support/alert/rust-alert"]
 	path = src/support/alert/rust-alert
 	url = git://github.com/mozilla-servo/rust-alert.git
+[submodule "src/support/nss/nss"]
+	path = src/support/nss/nss
+	url = git://github.com/mozilla-servo/nss.git
+[submodule "src/support/nss/nspr"]
+	path = src/support/nss/nspr
+	url = git://github.com/mozilla-servo/nspr.git
diff --git a/src/support/nss/nspr b/src/support/nss/nspr
new file mode 160000
index 00000000000..27b456e7d5a
--- /dev/null
+++ b/src/support/nss/nspr
@@ -0,0 +1 @@
+Subproject commit 27b456e7d5a0f75381ab34b961f6779097007af7
diff --git a/src/support/nss/nss b/src/support/nss/nss
new file mode 160000
index 00000000000..3d07e85a597
--- /dev/null
+++ b/src/support/nss/nss
@@ -0,0 +1 @@
+Subproject commit 3d07e85a597ce9c5c1ec80f85983efcb26aa58e1