diff --git a/Gemfile.lock b/Gemfile.lock
index 00a06e3..162b65e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -33,7 +33,7 @@ GEM
       sassc (> 2.0.1, < 3.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    kramdown (2.3.0)
+    kramdown (2.3.1)
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
@@ -48,7 +48,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.3)
+    rexml (3.2.4)
     rouge (3.26.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
@@ -58,6 +58,7 @@ GEM
     unicode-display_width (1.7.0)
 
 PLATFORMS
+  ruby
   x86_64-darwin-19
 
 DEPENDENCIES