diff --git a/ruby/lib/rubygems/ssl_certs/rubygems.org/AddTrustExternalCARoot.pem b/ruby/lib/rubygems/ssl_certs/rubygems.org/AddTrustExternalCARoot.pem
deleted file mode 100644
index 20585f1c0..000000000
--- a/ruby/lib/rubygems/ssl_certs/rubygems.org/AddTrustExternalCARoot.pem
+++ /dev/null
@@ -1,25 +0,0 @@
------BEGIN CERTIFICATE-----
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------END CERTIFICATE-----
diff --git a/ruby/lib/rubygems/ssl_certs/rubygems.org/GlobalSignRootCA_R3.pem b/ruby/lib/rubygems/ssl_certs/rubygems.org/GlobalSignRootCA_R3.pem
new file mode 100644
index 000000000..8afb21905
--- /dev/null
+++ b/ruby/lib/rubygems/ssl_certs/rubygems.org/GlobalSignRootCA_R3.pem
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----
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+-----END CERTIFICATE-----