diff --git a/.gitmodules b/.gitmodules
index 7117335..60b8392 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,9 +4,6 @@
 [submodule "lib/openzeppelin-contracts"]
 	path = lib/openzeppelin-contracts
 	url = https://github.com/openzeppelin/openzeppelin-contracts
-[submodule "lib/reference"]
-	path = lib/reference
-	url = https://github.com/erc6551/reference
 [submodule "lib/account-abstraction"]
 	path = lib/account-abstraction
 	url = https://github.com/eth-infinitism/account-abstraction
diff --git a/lib/reference b/lib/reference
deleted file mode 160000
index 9d42dc2..0000000
--- a/lib/reference
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 9d42dc23c7db77d4a50f3121b716a35f3544a935