diff --git a/.travis.yml b/.travis.yml
index 37c3d08..f2e1c24 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,4 +29,4 @@ matrix:
 
 script:
   - emacs --version
-  - make test
+  - cask exec make test
diff --git a/Cask b/Cask
index f69b06f..1bcdea9 100644
--- a/Cask
+++ b/Cask
@@ -1,5 +1,9 @@
 (source gnu)
-(source melpa)
+(source melpa-stable)
 
-(files "*.el")
 (package-file "csharp-mode.el")
+(files "csharp-mode.el")
+
+(development
+ (depends-on "dash")
+ (depends-on "assess"))
diff --git a/csharp-mode-tests.el b/csharp-mode-tests.el
index 1bf7b47..3d04f8a 100644
--- a/csharp-mode-tests.el
+++ b/csharp-mode-tests.el
@@ -21,20 +21,6 @@
 (require 'csharp-mode)
 (require 'package)
 
-;; development only packages, not declared as a package-dependency
-(package-initialize)
-(add-to-list 'package-archives '("melpa" . "https://stable.melpa.org/packages/"))
-
-;; required to resolve SEQ (or anything on elpa) on Emacs25.
-(setq package-check-signature nil)
-
-;; assess depends on dash 2.12.1, which is no longer available
-;; installing dash, resolves 2.13.0, and fixes this broken dependency.
-(dolist (p '(dash assess))
-  (when (not (package-installed-p p))
-    (package-refresh-contents)
-    (package-install p)))
-
 ;;; test-helper functions
 
 (defmacro assess-face-in-text= (testee &rest assessments)