diff --git a/certs/GeoTrustGlobalCA_crosssigned.crt b/certs/GeoTrustGlobalCA_crosssigned.crt
new file mode 100644
index 0000000..33cc002
--- /dev/null
+++ b/certs/GeoTrustGlobalCA_crosssigned.crt
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----
+MIIDfTCCAuagAwIBAgIDErvmMA0GCSqGSIb3DQEBBQUAME4xCzAJBgNVBAYTAlVT
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+b8ravHNjkOR/ez4iyz0H7V84dJzjA1BOoa+Y7mHyhD8S
+-----END CERTIFICATE-----