diff --git a/Gemfile.lock b/Gemfile.lock
index 97638d8a5..9d2078703 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,8 +10,10 @@ GEM
     em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
     eventmachine (1.2.7-x64-mingw32)
     fast-stemmer (1.0.2)
+    ffi (1.15.0)
     ffi (1.15.0-x64-mingw32)
     forwardable-extended (2.6.0)
     http_parser.rb (0.6.0)
@@ -41,7 +43,7 @@ GEM
       jekyll (>= 3.7, < 5.0)
     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)
@@ -67,6 +69,7 @@ GEM
     wdm (0.1.1)
 
 PLATFORMS
+  ruby
   x64-mingw32
 
 DEPENDENCIES