diff --git a/Gemfile.lock b/Gemfile.lock
index cf272f1..617ef49 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,8 +2,8 @@ PATH
   remote: .
   specs:
     ProMotion (1.2.0)
-      methadone (~> 1.3.2)
-      motion-require (~> 0.2.0)
+      methadone (~> 1.3)
+      motion-require (~> 0.2)
 
 GEM
   remote: https://rubygems.org/
@@ -12,7 +12,7 @@ GEM
       bundler
     motion-redgreen (0.1.0)
     motion-require (0.2.0)
-    motion-stump (0.3.1)
+    motion-stump (0.3.2)
     rake (10.1.1)
     webstub (1.0.1)
 
@@ -21,8 +21,8 @@ PLATFORMS
 
 DEPENDENCIES
   ProMotion!
-  motion-redgreen (~> 0.1.0)
+  motion-redgreen (~> 0.1)
   motion-require
-  motion-stump (~> 0.3.1)
-  rake (~> 10.1.1)
-  webstub (~> 1.0.1)
+  motion-stump (~> 0.3)
+  rake (~> 10.1)
+  webstub (~> 1.0)
diff --git a/ProMotion.gemspec b/ProMotion.gemspec
index 178ec2e..19664ce 100644
--- a/ProMotion.gemspec
+++ b/ProMotion.gemspec
@@ -21,10 +21,10 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
   gem.version       = ProMotion::VERSION
 
-  gem.add_dependency "motion-require", "~> 0.2.0"
-  gem.add_development_dependency("webstub", "~> 1.0.1")
-  gem.add_development_dependency("motion-stump", "~> 0.3.1")
-  gem.add_development_dependency("motion-redgreen", "~> 0.1.0")
-  gem.add_development_dependency("rake", "~> 10.1.1")
-  gem.add_dependency("methadone", "~> 1.3.2")
+  gem.add_dependency "motion-require", "~> 0.2"
+  gem.add_runtime_dependency("methadone", "~> 1.3")
+  gem.add_development_dependency("webstub", "~> 1.0")
+  gem.add_development_dependency("motion-stump", "~> 0.3")
+  gem.add_development_dependency("motion-redgreen", "~> 0.1")
+  gem.add_development_dependency("rake", "~> 10.1")
 end