diff --git a/launchdarkly-server-sdk.gemspec b/launchdarkly-server-sdk.gemspec
index 5a54c526..8c7bfc5a 100644
--- a/launchdarkly-server-sdk.gemspec
+++ b/launchdarkly-server-sdk.gemspec
@@ -39,6 +39,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency "concurrent-ruby", "~> 1.1"
   spec.add_runtime_dependency "ld-eventsource", "2.2.6"
   spec.add_runtime_dependency "observer", "~> 0.1.2"
+  spec.add_runtime_dependency "openssl", "~> 3.1", ">= 3.1.2"
   spec.add_runtime_dependency "semantic", "~> 1.6"
   spec.add_runtime_dependency "zlib", "~> 3.1" unless RUBY_PLATFORM == "java"
   # Please keep ld-eventsource dependency as an exact version so that bugfixes to