diff --git a/gem-public_cert.pem b/gem-public_cert.pem
new file mode 100644
index 000000000..0722498e6
--- /dev/null
+++ b/gem-public_cert.pem
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----
+MIIDPDCCAiSgAwIBAgIBADANBgkqhkiG9w0BAQUFADBEMRYwFAYDVQQDDA1qb25h
+cy5uaWNrbGFzMRUwEwYKCZImiZPyLGQBGRYFZ21haWwxEzARBgoJkiaJk/IsZAEZ
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+R1SH1ni+3bH7B4tAkbWskg==
+-----END CERTIFICATE-----