diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..96335fb
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "CryoREAD"]
+	path = CryoREAD
+	url = https://github.com/kiharalab/CryoREAD.git
diff --git a/CryoREAD b/CryoREAD
new file mode 160000
index 0000000..4c2fda0
--- /dev/null
+++ b/CryoREAD
@@ -0,0 +1 @@
+Subproject commit 4c2fda037ed602a5c5f9f24aba2b36e888fba8f3