diff --git a/custom-variables.el b/custom-variables.el
index 6b870bb..cc93c8b 100644
--- a/custom-variables.el
+++ b/custom-variables.el
@@ -50,6 +50,7 @@
  '(fci-handle-truncate-lines nil)
  '(fci-rule-width 1)
  '(fill-column 78)
+ '(flycheck-rubocop-lint-only t)
  '(fringe-mode 0 nil (fringe))
  '(global-auto-revert-mode t)
  '(global-undo-tree-mode t)
diff --git a/mode-customizations/coffee-mode.el b/mode-customizations/coffee-mode.el
index ef0daea..97e79a8 100644
--- a/mode-customizations/coffee-mode.el
+++ b/mode-customizations/coffee-mode.el
@@ -4,7 +4,7 @@
 (defun customizations-for-coffee-mode ()
   (interactive)
   (flyspell-prog-mode)
-  (flymake-coffee-load)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/haml-mode.el b/mode-customizations/haml-mode.el
index a0c98d3..9247ca5 100644
--- a/mode-customizations/haml-mode.el
+++ b/mode-customizations/haml-mode.el
@@ -3,7 +3,7 @@
 (defun customizations-for-haml-mode ()
   (interactive)
   (flyspell-prog-mode)
-  (flymake-haml-load)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/js-mode.el b/mode-customizations/js-mode.el
index fc1c4a3..eff2858 100644
--- a/mode-customizations/js-mode.el
+++ b/mode-customizations/js-mode.el
@@ -2,6 +2,7 @@
   (interactive)
   (setq js-indent-level 2)
   (flyspell-prog-mode)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/makefile-mode.el b/mode-customizations/makefile-mode.el
index b39a28a..82c7463 100644
--- a/mode-customizations/makefile-mode.el
+++ b/mode-customizations/makefile-mode.el
@@ -1,6 +1,7 @@
 (defun customizations-for-makefile-mode ()
   (interactive)
   (flyspell-prog-mode)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/ruby-mode.el b/mode-customizations/ruby-mode.el
index baf7068..71568c1 100644
--- a/mode-customizations/ruby-mode.el
+++ b/mode-customizations/ruby-mode.el
@@ -41,7 +41,7 @@
   (highlight-indentation-mode)
   (highlight-indentation-current-column-mode)
   (hs-minor-mode 1)
-  (flymake-ruby-load)
+  (flycheck-mode)
   (subword-mode)
   (setq ruby-deep-arglist nil)
   (setq ruby-deep-indent-paren nil)
diff --git a/mode-customizations/sass-mode.el b/mode-customizations/sass-mode.el
index 2c8eb35..232d5d6 100644
--- a/mode-customizations/sass-mode.el
+++ b/mode-customizations/sass-mode.el
@@ -1,7 +1,7 @@
 (defun customizations-for-sass-mode ()
   (interactive)
   (flyspell-prog-mode)
-  (flymake-sass-load)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/sh-mode.el b/mode-customizations/sh-mode.el
index 54a9275..04f3b68 100644
--- a/mode-customizations/sh-mode.el
+++ b/mode-customizations/sh-mode.el
@@ -6,7 +6,7 @@
 (defun customizations-for-sh-mode ()
   (interactive)
   (flyspell-prog-mode)
-  (flymake-shell-load)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/mode-customizations/yaml-mode.el b/mode-customizations/yaml-mode.el
index 41da857..ba4b7a8 100644
--- a/mode-customizations/yaml-mode.el
+++ b/mode-customizations/yaml-mode.el
@@ -5,6 +5,7 @@
 (defun customizations-for-yaml-mode ()
   (interactive)
   (flyspell-prog-mode)
+  (flycheck-mode)
   (linum-mode t)
   (fci-mode)
   (auto-complete-mode)
diff --git a/packages.el b/packages.el
index 79fc75c..2de3ba1 100644
--- a/packages.el
+++ b/packages.el
@@ -39,14 +39,10 @@
     expand-region
     feature-mode
     fill-column-indicator
-    flymake-coffee
+    flycheck
     flymake-css
     flymake-cursor
-    flymake-haml
     flymake-php
-    flymake-ruby
-    flymake-sass
-    flymake-shell
     full-ack
     gitconfig-mode
     github-browse-file