diff --git a/.gitmodules b/.gitmodules
index d5ac1a6..0c2c2af 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "bsidestlv2021krnl"]
 	path = bsidestlv2021krnl
-	url = https://github.com/bsidestlv/bsidestlv2021krnl
+	url = https://github.com/bsidestlv/bsidestlv2021krnl.git
diff --git a/bsidestlv2021krnl b/bsidestlv2021krnl
new file mode 160000
index 0000000..c17723e
--- /dev/null
+++ b/bsidestlv2021krnl
@@ -0,0 +1 @@
+Subproject commit c17723efb8d3fee54fd37711dfe7e1aa74d37cb6