diff --git a/Gemfile.lock b/Gemfile.lock
index e998643..ba6eea9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -306,6 +306,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-18
+  x86_64-darwin-19
   x86_64-linux
 
 DEPENDENCIES