diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..ec3e004
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,12 @@
+[submodule "java-lotto-6"]
+	path = java-lotto-6
+	url = git@github.com:h-beeen/java-lotto-6.git
+[submodule "java-racingcar-6"]
+	path = java-racingcar-6
+	url = git@github.com:h-beeen/java-racingcar-6.git
+[submodule "java-christmas-6-h-beeen"]
+	path = java-christmas-6-h-beeen
+	url = git@github.com:h-beeen/java-christmas-6-h-beeen.git
+[submodule "java-baseball-6"]
+	path = java-baseball-6
+	url = git@github.com:h-beeen/java-baseball-6.git
diff --git a/java-baseball-6 b/java-baseball-6
new file mode 160000
index 0000000..35b1495
--- /dev/null
+++ b/java-baseball-6
@@ -0,0 +1 @@
+Subproject commit 35b149523304c7397dfcb6cf6974f18fdb6a4af5
diff --git a/java-christmas-6-h-beeen b/java-christmas-6-h-beeen
new file mode 160000
index 0000000..9a0b22e
--- /dev/null
+++ b/java-christmas-6-h-beeen
@@ -0,0 +1 @@
+Subproject commit 9a0b22e77521ac3950167fd92fd5ea21b960047d
diff --git a/java-lotto-6 b/java-lotto-6
new file mode 160000
index 0000000..ea2d934
--- /dev/null
+++ b/java-lotto-6
@@ -0,0 +1 @@
+Subproject commit ea2d934f602e03340fd3a20aeb8d1608cb95a9eb
diff --git a/java-racingcar-6 b/java-racingcar-6
new file mode 160000
index 0000000..1aa85aa
--- /dev/null
+++ b/java-racingcar-6
@@ -0,0 +1 @@
+Subproject commit 1aa85aa4ed7bc6178dce93c0aa620fa58a89890a