diff --git a/Gemfile.lock b/Gemfile.lock
index a17039c..00ba958 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -216,8 +216,8 @@ GEM
     parser (3.3.4.2)
       ast (~> 2.4.1)
       racc
-    pg (1.5.7)
-    pg (1.5.7-x64-mingw-ucrt)
+    pg (1.5.9)
+    pg (1.5.9-x64-mingw-ucrt)
     popper_js (2.11.8)
     psych (5.1.2)
       stringio