diff --git a/.gitmodules b/.gitmodules
index e1066d94b..24a52fb9a 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -31,3 +31,9 @@
 [submodule "lib/murky"]
 	path = lib/murky
 	url = https://github.com/lib/murky
+[submodule "lib/seaport-types"]
+	path = lib/seaport-types
+	url = https://github.com/projectopensea/seaport-types
+[submodule "lib/seaport-core"]
+	path = lib/seaport-core
+	url = https://github.com/projectopensea/seaport-core