diff --git a/.gitmodules b/.gitmodules
index a6ab58d9897..6bb1f137e06 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -100,3 +100,6 @@
 [submodule "src/support/glfw/glfw-rs"]
 	path = src/support/glfw/glfw-rs
 	url = https://github.com/mozilla-servo/glfw-rs.git
+[submodule "src/support/css/rust-cssparser"]
+	path = src/support/css/rust-cssparser
+	url = https://github.com/mozilla-servo/rust-cssparser.git
diff --git a/configure b/configure
index 6e037746f75..7a40b5020fa 100755
--- a/configure
+++ b/configure
@@ -401,6 +401,7 @@ CFG_SUBMODULES="\
     support/alert/rust-alert \
     support/azure/rust-azure \
     support/css/rust-css \
+    support/css/rust-cssparser \
     support/geom/rust-geom \
     support/glut/rust-glut \
     support/glfw/glfw \
diff --git a/src/support/css/rust-cssparser b/src/support/css/rust-cssparser
new file mode 160000
index 00000000000..3dc9f508b85
--- /dev/null
+++ b/src/support/css/rust-cssparser
@@ -0,0 +1 @@
+Subproject commit 3dc9f508b8517e4efddffb4703e3a5e9d63d4f25