diff --git a/Gemfile.lock b/Gemfile.lock
index d0b5933..1f3437d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -3,13 +3,13 @@ PATH
   specs:
     mailcatcher (0.5.9)
       activesupport (~> 3.0)
-      eventmachine (~> 1.0)
+      eventmachine (~> 1.0.0)
       haml (~> 3.1)
       mail (~> 2.3)
       sinatra (~> 1.2)
-      skinny (~> 0.2.2)
+      skinny (~> 0.2.3)
       sqlite3 (~> 1.3)
-      thin (~> 1.4.1)
+      thin (~> 1.5.0)
 
 GEM
   remote: http://rubygems.org/
@@ -64,11 +64,11 @@ GEM
       rack (~> 1.3, >= 1.3.6)
       rack-protection (~> 1.2)
       tilt (~> 1.3, >= 1.3.3)
-    skinny (0.2.2)
-      eventmachine (~> 1.0)
-      thin
+    skinny (0.2.3)
+      eventmachine (~> 1.0.0)
+      thin (~> 1.5.0)
     sqlite3 (1.3.6)
-    thin (1.4.1)
+    thin (1.5.0)
       daemons (>= 1.0.9)
       eventmachine (>= 0.12.6)
       rack (>= 1.0.0)
diff --git a/mailcatcher.gemspec b/mailcatcher.gemspec
index df0c838..e35ad04 100644
--- a/mailcatcher.gemspec
+++ b/mailcatcher.gemspec
@@ -33,13 +33,13 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 1.8.7'
 
   s.add_dependency "activesupport", "~> 3.0"
-  s.add_dependency "eventmachine", "~> 1.0"
+  s.add_dependency "eventmachine", "~> 1.0.0"
   s.add_dependency "haml", "~> 3.1"
   s.add_dependency "mail", "~> 2.3"
   s.add_dependency "sinatra", "~> 1.2"
   s.add_dependency "sqlite3", "~> 1.3"
-  s.add_dependency "thin", "~> 1.4.1"
-  s.add_dependency "skinny", "~> 0.2.2"
+  s.add_dependency "thin", "~> 1.5.0"
+  s.add_dependency "skinny", "~> 0.2.3"
 
   s.add_development_dependency "coffee-script"
   s.add_development_dependency "compass"