diff --git a/Gemfile b/Gemfile
index f49dae08f..2a699b6c0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ group(:build_site) do
   gem 'kramdown', '~> 2.3'
   gem 'vlad', '~> 2.7'
   gem 'vlad-git', '~> 2.1'
-  gem 'listen', '~> 3.5.1' # Preserve ability to run on Ruby 2.0, since listen 3.1 requires Ruby ~> 2.2.
+  gem 'listen', '~> 3.6.0' # Preserve ability to run on Ruby 2.0, since listen 3.1 requires Ruby ~> 2.2.
 end
 
 group(:generate_references) do
diff --git a/Gemfile.lock b/Gemfile.lock
index 82d174980..128b5698a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -32,7 +32,7 @@ GEM
       hocon (~> 1.3)
       thor (>= 1.0.1, < 2.0)
     fast_gettext (1.8.0)
-    ffi (1.15.1)
+    ffi (1.15.3)
     forwardable-extended (2.6.0)
     git (1.8.1)
       rchardet (~> 1.8)
@@ -67,7 +67,7 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.5.1)
+    listen (3.6.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     locale (2.1.3)
@@ -164,7 +164,7 @@ DEPENDENCIES
   jekyll (~> 4.1)
   json (~> 2.5)
   kramdown (~> 2.3)
-  listen (~> 3.5.1)
+  listen (~> 3.6.0)
   maruku (~> 0.7)
   nokogiri (~> 1.11)
   pandoc-ruby