diff --git a/Gemfile b/Gemfile
index 395ed9a..1e09c75 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ install_if -> { RUBY_PLATFORM =~ %r!mingw|mswin|java! } do
 end
 
 # Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.1", :install_if => Gem.win_platform?
+gem "wdm", "~> 0.2.0", :install_if => Gem.win_platform?
 gem "webrick", "~> 1.7"
 
 gem "rackup"
\ No newline at end of file
diff --git a/Gemfile.lock b/Gemfile.lock
index 69739ea..8c57345 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -140,7 +140,7 @@ GEM
       tzinfo (>= 1.0.0)
     unicode-display_width (2.5.0)
     uri (0.13.0)
-    wdm (0.1.1)
+    wdm (0.2.0)
     webrick (1.8.1)
 
 PLATFORMS
@@ -165,7 +165,7 @@ DEPENDENCIES
   rackup
   tzinfo (~> 2.0)
   tzinfo-data
-  wdm (~> 0.1.1)
+  wdm (~> 0.2.0)
   webrick (~> 1.7)
 
 BUNDLED WITH