diff --git a/.gitignore b/.gitignore
index 64899ba..f0522dd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,5 @@ Gemfile.lock
 .bundle
 vendor
 /.idea/
+gem-private_key.pem
+
diff --git a/certs/opensearch-rubygems.pem b/certs/opensearch-rubygems.pem
new file mode 100644
index 0000000..691f7d0
--- /dev/null
+++ b/certs/opensearch-rubygems.pem
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/logstash-input-opensearch.gemspec b/logstash-input-opensearch.gemspec
index fb573f4..96df14e 100644
--- a/logstash-input-opensearch.gemspec
+++ b/logstash-input-opensearch.gemspec
@@ -1,6 +1,8 @@
 # Copyright OpenSearch Contributors
 # SPDX-License-Identifier: Apache-2.0
 
+signing_key_path = "gem-private_key.pem"
+
 Gem::Specification.new do |s|
 
   s.name            = 'logstash-input-opensearch'
@@ -19,6 +21,11 @@ Gem::Specification.new do |s|
   # Tests
   s.test_files = s.files.grep(%r{^(test|spec|features)/})
 
+  if $PROGRAM_NAME.end_with?("gem") && ARGV == ["build", __FILE__] && File.exist?(signing_key_path)
+    s.signing_key = signing_key_path
+    s.cert_chain  = ['certs/opensearch-rubygems.pem']
+  end
+
   # Special flag to let us know this is actually a logstash plugin
   s.metadata = { "logstash_plugin" => "true", "logstash_group" => "input" }