diff --git a/lib/hx509/ocsp.opt b/lib/hx509/ocsp.opt
new file mode 100644
index 000000000..697aa03e1
--- /dev/null
+++ b/lib/hx509/ocsp.opt
@@ -0,0 +1,2 @@
+--preserve-binary=OCSPTBSRequest
+--preserve-binary=OCSPResponseData