diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..a3a6447
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/borealis"]
+	path = lib/borealis
+	url = https://github.com/CaiMiao/borealis
diff --git a/lib/borealis b/lib/borealis
index c03edbd..0ea7621 160000
--- a/lib/borealis
+++ b/lib/borealis
@@ -1 +1 @@
-Subproject commit c03edbda11204cc365f7f6890a25087191ea5935
+Subproject commit 0ea762154b80e49f2078cce5ee571e9abd3607eb