diff --git a/Gemfile.lock b/Gemfile.lock
index fce8fc6..3bcecb3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,7 +35,8 @@ GEM
       faraday (~> 0.8)
     flutter_analyze_parser (0.1.2)
     git (1.5.0)
-    kramdown (2.1.0)
+    kramdown (2.3.1)
+      rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     multipart-post (2.1.1)
@@ -45,6 +46,7 @@ GEM
       sawyer (~> 0.8.0, >= 0.5.3)
     open4 (1.3.4)
     public_suffix (4.0.1)
+    rexml (3.2.4)
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
@@ -53,6 +55,7 @@ GEM
     unicode-display_width (1.6.0)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES