Gemfile.lock in pdfmonkey-0.5.0 vs Gemfile.lock in pdfmonkey-0.6.0

@@ -1,9 +1,9 @@
 PATH
   remote: .
   specs:
-    pdfmonkey (0.5.0)
+    pdfmonkey (0.6.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.0)
@@ -58,14 +58,14 @@
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  bundler (~> 1.17)
+  bundler (~> 2.2)
   coveralls (~> 0.8)
   pdfmonkey!
   rake (~> 13.0)
   rspec (~> 3.8)
   rubocop (~> 0.60.0)
 
 BUNDLED WITH
-   1.17.3
+   2.2.30