diff --git a/spec/faraday/adapter/net_http_persistent_spec.rb b/spec/faraday/adapter/net_http_persistent_spec.rb
index 1dd31ed7d..51c9dcb93 100644
--- a/spec/faraday/adapter/net_http_persistent_spec.rb
+++ b/spec/faraday/adapter/net_http_persistent_spec.rb
@@ -46,7 +46,7 @@
       {
         headers: { 'X-Faraday-Adapter' => adapter },
         ssl: {
-          min_version: '1.0'
+          min_version: :TLS1_2
         }
       }
     end