diff --git a/acme/acme/testdata/cert-idnsans.pem b/acme/acme/testdata/cert-idnsans.pem
new file mode 100644
index 000000000..932649692
--- /dev/null
+++ b/acme/acme/testdata/cert-idnsans.pem
@@ -0,0 +1,30 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----
diff --git a/acme/acme/testdata/csr-idnsans.pem b/acme/acme/testdata/csr-idnsans.pem
new file mode 100644
index 000000000..d6e91a420
--- /dev/null
+++ b/acme/acme/testdata/csr-idnsans.pem
@@ -0,0 +1,27 @@
+-----BEGIN CERTIFICATE REQUEST-----
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+-----END CERTIFICATE REQUEST-----