diff --git a/.travis.yml b/.travis.yml
index 95003d6..d6da67d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,21 +6,11 @@ env:
 before_install:
   - sudo add-apt-repository -y ppa:hvr/ghc
   - sudo apt-get update
-  - sudo apt-get install cabal-install-1.18 ghc-$GHCVER
-  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/1.18/bin:$PATH
-  - which ghc
-  - ghc --version
-  - which ghci
-  - ghci --version
-  - which cabal
-  - cabal --version
+  - sudo apt-get install cabal-install-1.18 ghc-$GHCVER happy-1.19.3
+  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/1.18/bin:/opt/happy/1.19.3/bin:$PATH
 
 install:
   - cabal update
-  - mkdir sandbox
-  - (cd sandbox; cabal sandbox init; cabal install happy)
-  - export PATH=$PWD/.cabal-sandbox/bin:$PATH
-  - happy --version
   - cabal install --only-dependencies --enable-tests
 
 script: