diff --git a/.gitmodules b/.gitmodules
index 0f1219f..06f3389 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,3 +4,6 @@
 [submodule "onchain/lib/solmate"]
 	path = onchain/lib/solmate
 	url = https://github.com/Rari-Capital/solmate
+[submodule "onchain/lib/openzeppelin-contracts"]
+	path = onchain/lib/openzeppelin-contracts
+	url = https://github.com/OpenZeppelin/openzeppelin-contracts
diff --git a/onchain/lib/openzeppelin-contracts b/onchain/lib/openzeppelin-contracts
new file mode 160000
index 0000000..dbb6104
--- /dev/null
+++ b/onchain/lib/openzeppelin-contracts
@@ -0,0 +1 @@
+Subproject commit dbb6104ce834628e473d2173bbc9d47f81a9eec3