diff --git a/.gitmodules b/.gitmodules
index 3c69447..80206d4 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -25,3 +25,6 @@
 [submodule "sources/luajit2"]
 	path = sources/luajit2
 	url = https://github.com/openresty/luajit2
+[submodule "sources/lua-resty-websocket"]
+	path = sources/lua-resty-websocket
+	url = https://github.com/openresty/lua-resty-websocket
diff --git a/build b/build
index 0b0405f..2124530 100755
--- a/build
+++ b/build
@@ -86,6 +86,10 @@ pushd $TOP/sources/lua-resty-lrucache
 	sudo make install PREFIX=$PREFIX
 popd
 
+pushd $TOP/sources/lua-resty-websocket
+	sudo make install PREFIX=$PREFIX
+popd
+
 pushd $TOP/sources/nginx
 
 # needed for lua-nginx-module
diff --git a/sources/lua-resty-websocket b/sources/lua-resty-websocket
new file mode 160000
index 0000000..83471c3
--- /dev/null
+++ b/sources/lua-resty-websocket
@@ -0,0 +1 @@
+Subproject commit 83471c3096eb8e2311deb398f60a2f46c3dfdcab