diff --git a/.gitmodules b/.gitmodules
index b941b65..1809bd3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -33,4 +33,4 @@
 	url = https://softwarepublico.gov.br/gitlab/noosfero-apps/proposal-app.git
 [submodule "plugins/serpro_captcha"]
 	path = plugins/serpro_captcha
-	url = https://softwarepublico.gov.br/gitlab/noosfero-plugins/serpro_captcha.git
+	url = git@softwarepublico.gov.br:noosfero-plugins/serpro_captcha.git
diff --git a/plugins/serpro_captcha b/plugins/serpro_captcha
new file mode 160000
index 0000000..8f098f7
--- /dev/null
+++ b/plugins/serpro_captcha
@@ -0,0 +1 @@
+Subproject commit 8f098f7c6d32adc350a1d21419a86f93b89438fe
--
libgit2 0.21.2