diff --git a/.gitmodules b/.gitmodules
index e6d21cc..10201e7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,9 @@
 [submodule "klein-vhdl"]
 	path = klein-vhdl
 	url = https://github.com/huljar/klein-vhdl
+[submodule "Ascon/ascon_hardware_implementation"]
+	path = Ascon/ascon_hardware_implementation
+	url = https://github.com/michaelfivez/ascon_hardware_implementation
+[submodule "Ascon/ascon_dom"]
+	path = Ascon/ascon_dom
+	url = https://github.com/hgrosz/ascon_dom
diff --git a/Ascon/ascon_dom b/Ascon/ascon_dom
new file mode 160000
index 0000000..2ca464b
--- /dev/null
+++ b/Ascon/ascon_dom
@@ -0,0 +1 @@
+Subproject commit 2ca464ba5ee4be117b5581196eac31719805ce56
diff --git a/Ascon/ascon_hardware_implementation b/Ascon/ascon_hardware_implementation
new file mode 160000
index 0000000..ca4946f
--- /dev/null
+++ b/Ascon/ascon_hardware_implementation
@@ -0,0 +1 @@
+Subproject commit ca4946f780f0b5ecb0c8d8d6f10f354d7575737d