diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.2.1
+
+- Tested with GHC 8.0.2.
+
 # 0.2.0
 
 - Moved to Servant 0.10 (3931320)
diff --git a/Setup.hs b/Setup.hs
deleted file mode 100644
--- a/Setup.hs
+++ /dev/null
diff --git a/mailchimp.cabal b/mailchimp.cabal
--- a/mailchimp.cabal
+++ b/mailchimp.cabal
@@ -1,5 +1,5 @@
 name: mailchimp
-version: 0.2.0
+version: 0.2.1
 
 build-type: Simple
 cabal-version: >= 1.21
@@ -21,7 +21,7 @@
 
 category: Web
 
-tested-with: GHC == 7.10.3, GHC == 8.0.1
+tested-with: GHC == 7.10.3, GHC == 8.0.1, GHC == 8.0.2
 
 extra-source-files:
   CHANGELOG.md
@@ -57,6 +57,23 @@
       Haskell2010
   ghc-options:
       -Wall
+
+
+test-suite sd
+  type:
+      exitcode-stdio-1.0
+  hs-source-dirs:
+      test
+  main-is:
+      Spec.hs
+  other-modules:
+      Web.MailChimpSpec
+  build-depends:
+      base
+    , hspec >= 2.4 && < 2.5
+    , mailchimp
+  default-language:
+      Haskell2010
 
 
 source-repository head
diff --git a/test/Spec.hs b/test/Spec.hs
new file mode 100644
--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,1 @@
+{-# OPTIONS_GHC -F -pgmF hspec-discover #-}
diff --git a/test/Web/MailChimpSpec.hs b/test/Web/MailChimpSpec.hs
new file mode 100644
--- /dev/null
+++ b/test/Web/MailChimpSpec.hs
@@ -0,0 +1,30 @@
+{-# LANGUAGE OverloadedStrings #-}
+
+module Web.MailChimpSpec
+  ( main
+  , spec
+  )
+  where
+
+-- base
+import Control.Monad
+import Data.Maybe
+
+-- hspec
+import Test.Hspec
+
+-- mailchimp
+import Web.MailChimp
+
+
+main :: IO ()
+main =
+  hspec spec
+
+
+spec :: Spec
+spec =
+  describe "makeBaseUrl" $ do
+    it "makes a base url" $ do
+      makeBaseUrl "01234567890123456789012345678901-ab01"
+        `shouldSatisfy` isJust