diff --git a/.gitmodules b/.gitmodules
index d44736f..80aa120 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "gateware/amaranth-boards"]
 	path = gateware/amaranth-boards
 	url = https://github.com/amaranth-lang/amaranth-boards
+[submodule "gateware/jtagtap"]
+	path = gateware/jtagtap
+	url = git@github.com:davidlenfesty/jtagtap
diff --git a/gateware/jtagtap b/gateware/jtagtap
new file mode 160000
index 0000000..851b71b
--- /dev/null
+++ b/gateware/jtagtap
@@ -0,0 +1 @@
+Subproject commit 851b71bb8bab68b082405170f0e3f3464609a297