diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..05d359f
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "modules/lib3270"]
+	path = modules/lib3270
+	url = https://softwarepublico.gov.br/gitlab/pw3270/lib3270.git
diff --git a/modules/lib3270 b/modules/lib3270
new file mode 160000
index 0000000..8927cb4
--- /dev/null
+++ b/modules/lib3270
@@ -0,0 +1 @@
+Subproject commit 8927cb432f046fac5c64dfcf1a456584800ef084
--
libgit2 0.21.2