diff --git a/lib/openzeppelin-contracts b/lib/openzeppelin-contracts
deleted file mode 160000
index dfaf28c..0000000
--- a/lib/openzeppelin-contracts
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit dfaf28c7d700580ab8e99040f05410a0b8adfcf3