diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..016d0c0
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,7 @@
+[submodule "kyupy"]
+	path = kyupy
+	url = https://git.vlab.cse.kyutech.ac.jp/stefan/kyupy.git
+	branch = devel
+[submodule "circuits/picorv32"]
+	path = circuits/picorv32
+	url = git@github.com:s-holst/picorv32.git
diff --git a/README.md b/README.md
index 1f55d39..3a36d6c 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,2 @@
-# infield
+# In-Field Testing Using MISR
 
-In-Field Testing Using MISR
\ No newline at end of file
diff --git a/circuits/picorv32 b/circuits/picorv32
new file mode 160000
index 0000000..9ab4f93
--- /dev/null
+++ b/circuits/picorv32
@@ -0,0 +1 @@
+Subproject commit 9ab4f931768d5e667067ca2310e29174a507fc7b
diff --git a/kyupy b/kyupy
new file mode 160000
index 0000000..f0b55ee
--- /dev/null
+++ b/kyupy
@@ -0,0 +1 @@
+Subproject commit f0b55eed271941db16687dbc625a18ef2e96f25d