diff --git a/.gitmodules b/.gitmodules
index 9895c91..0afdbc1 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -40,3 +40,6 @@
 [submodule "third-deps/sregex"]
 	path = third-deps/sregex
 	url = https://github.com/openresty/sregex.git
+[submodule "modules/ngx_http_google_filter_module"]
+	path = modules/ngx_http_google_filter_module
+	url = https://github.com/cuber/ngx_http_google_filter_module.git
diff --git a/Dockerfile b/Dockerfile
index e7cb98d..aa910dc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -69,6 +69,7 @@ RUN set -ex \
         --add-dynamic-module=/usr/src/modules/headers-more-nginx-module \
         --add-dynamic-module=/usr/src/modules/ngx_devel_kit \
         --add-dynamic-module=/usr/src/modules/iconv-nginx-module \
+        --add-dynamic-module=/usr/src/modules/ngx_http_google_filter_module \
         | bash -x \
 # build modules
     && make modules -j$(nproc) \
diff --git a/modules/ngx_http_google_filter_module b/modules/ngx_http_google_filter_module
new file mode 160000
index 0000000..1858171
--- /dev/null
+++ b/modules/ngx_http_google_filter_module
@@ -0,0 +1 @@
+Subproject commit 1858171244e9eb42be3fcf1d0ef6763df659b2bf