diff --git a/Gemfile.lock b/Gemfile.lock
index 4228ebe8..5d806ee5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,7 +58,7 @@ GEM
     parser (3.3.4.2)
       ast (~> 2.4.1)
       racc
-    pg (1.5.7)
+    pg (1.5.8)
     public_suffix (6.0.0)
     puma (6.4.2)
       nio4r (~> 2.0)
diff --git a/vendor/cache/pg-1.5.7.gem b/vendor/cache/pg-1.5.7.gem
deleted file mode 100644
index 03bb4ff0..00000000
Binary files a/vendor/cache/pg-1.5.7.gem and /dev/null differ
diff --git a/vendor/cache/pg-1.5.8.gem b/vendor/cache/pg-1.5.8.gem
new file mode 100644
index 00000000..246efd3a
Binary files /dev/null and b/vendor/cache/pg-1.5.8.gem differ