diff --git a/.travis.yml b/.travis.yml
index 82be4d58f09d188a6bf667cbcbe3bf7147997879..2a1f27cd430d3dd5c5837fdabf96a562a4690824 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,47 +1,125 @@
-env:
- - CABALVER=1.16 GHCVER=7.0.1
- - CABALVER=1.16 GHCVER=7.0.2
- - CABALVER=1.16 GHCVER=7.0.3
- - CABALVER=1.16 GHCVER=7.0.4
- - CABALVER=1.16 GHCVER=7.2.1
- - CABALVER=1.16 GHCVER=7.2.2
- - CABALVER=1.16 GHCVER=7.4.1
- - CABALVER=1.16 GHCVER=7.4.2
- - CABALVER=1.16 GHCVER=7.6.1
- - CABALVER=1.16 GHCVER=7.6.2
- - CABALVER=1.16 GHCVER=7.6.3
- - CABALVER=1.18 GHCVER=7.8.1
- - CABALVER=1.18 GHCVER=7.8.2
- - CABALVER=1.18 GHCVER=7.8.3
- - CABALVER=1.18 GHCVER=7.8.4
- - CABALVER=1.22 GHCVER=7.10.1
- - CABALVER=head GHCVER=head
+# This file has been generated -- see https://github.com/hvr/multi-ghc-travis
+language: c
+sudo: false
+
+cache:
+  directories:
+    - $HOME/.cabsnap
+    - $HOME/.cabal/packages
+
+before_cache:
+  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/build-reports.log
+  - rm -fv $HOME/.cabal/packages/hackage.haskell.org/00-index.tar
 
 matrix:
+  include:
+    - env: CABALVER=1.16 GHCVER=7.0.1
+      compiler: ": #GHC 7.0.1"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.0.1], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.0.2
+      compiler: ": #GHC 7.0.2"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.0.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.0.3
+      compiler: ": #GHC 7.0.3"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.0.3], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.0.4
+      compiler: ": #GHC 7.0.4"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.0.4], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.2.1
+      compiler: ": #GHC 7.2.1"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.2.1], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.2.2
+      compiler: ": #GHC 7.2.2"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.2.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.4.1
+      compiler: ": #GHC 7.4.1"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.4.1], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.4.2
+      compiler: ": #GHC 7.4.2"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.4.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.6.1
+      compiler: ": #GHC 7.6.1"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.1], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.6.2
+      compiler: ": #GHC 7.6.2"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.16 GHCVER=7.6.3
+      compiler: ": #GHC 7.6.3"
+      addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.3], sources: [hvr-ghc]}}
+    - env: CABALVER=1.18 GHCVER=7.8.1
+      compiler: ": #GHC 7.8.1"
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.1], sources: [hvr-ghc]}}
+    - env: CABALVER=1.18 GHCVER=7.8.2
+      compiler: ": #GHC 7.8.2"
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.2], sources: [hvr-ghc]}}
+    - env: CABALVER=1.18 GHCVER=7.8.3
+      compiler: ": #GHC 7.8.3"
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.3], sources: [hvr-ghc]}}
+    - env: CABALVER=1.18 GHCVER=7.8.4
+      compiler: ": #GHC 7.8.4"
+      addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.4], sources: [hvr-ghc]}}
+    - env: CABALVER=1.22 GHCVER=7.10.1
+      compiler: ": #GHC 7.10.1"
+      addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.1], sources: [hvr-ghc]}}
+    - env: CABALVER=head GHCVER=head
+      compiler: ": #GHC head"
+      addons: {apt: {packages: [cabal-install-head,ghc-head], sources: [hvr-ghc]}}
+
   allow_failures:
-   - env: CABALVER=head GHCVER=head
+    - env: CABALVER=head GHCVER=head
 
 before_install:
- - travis_retry sudo add-apt-repository -y ppa:hvr/ghc
- - travis_retry sudo apt-get update
- - travis_retry sudo apt-get install cabal-install-$CABALVER ghc-$GHCVER
+ - unset CC
  - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
 
 install:
- - cabal update
- - ghc --version
+ - cabal --version
+ - echo "$(ghc --version) [$(ghc --print-project-git-commit-id 2> /dev/null || echo '?')]"
+ - if [ -f $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz ];
+   then
+     zcat $HOME/.cabal/packages/hackage.haskell.org/00-index.tar.gz >
+          $HOME/.cabal/packages/hackage.haskell.org/00-index.tar;
+   fi
+ - travis_retry cabal update -v
+ - sed -i 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config
+ - cabal install --only-dependencies --dry -v > installplan.txt
+ - sed -i -e '1,/^Resolving /d' installplan.txt; cat installplan.txt
 
-script:
- - cabal configure -v2
- - cabal build -v2
- - if [ "$CABALVER" != "1.16" ]; then cabal check; fi
- - cabal sdist
-# The following scriptlet checks that the resulting source distribution can be built & installed
- - export SRC_TGZ=$(cabal info . | awk '{print $2 ".tar.gz";exit}') ;
-   cd dist/;
-   if [ -f "$SRC_TGZ" ]; then
-      cabal install --force-reinstalls "$SRC_TGZ";
+# check whether current requested install-plan matches cached package-db snapshot
+ - if diff -u installplan.txt $HOME/.cabsnap/installplan.txt;
+   then
+     echo "cabal build-cache HIT";
+     rm -rfv .ghc;
+     cp -a $HOME/.cabsnap/ghc $HOME/.ghc;
+     cp -a $HOME/.cabsnap/lib $HOME/.cabsnap/share $HOME/.cabsnap/bin $HOME/.cabal/;
    else
-      echo "expected '$SRC_TGZ' not found";
-      exit 1;
+     echo "cabal build-cache MISS";
+     rm -rf $HOME/.cabsnap;
+     mkdir -p $HOME/.ghc $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin;
+     cabal install --only-dependencies;
    fi
+ 
+# snapshot package-db on cache miss
+ - if [ ! -d $HOME/.cabsnap ];
+   then
+      echo "snapshotting package-db to build-cache";
+      mkdir $HOME/.cabsnap;
+      cp -a $HOME/.ghc $HOME/.cabsnap/ghc;
+      cp -a $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin installplan.txt $HOME/.cabsnap/;
+   fi
+
+# Here starts the actual work to be performed for the package under test;
+# any command which exits with a non-zero exit code causes the build to fail.
+script:
+ - if [ -f configure.ac ]; then autoreconf -i; fi
+ - cabal configure -v2  # -v2 provides useful information for debugging
+ - cabal build   # this builds all libraries and executables (including tests/benchmarks)
+ - cabal sdist   # tests that a source-distribution can be generated
+
+# Check that the resulting source distribution can be built & installed.
+# If there are no other `.tar.gz` files in `dist`, this can be even simpler:
+# `cabal install --force-reinstalls dist/*-*.tar.gz`
+ - SRC_TGZ=$(cabal info . | awk '{print $2;exit}').tar.gz &&
+   (cd dist && cabal install --force-reinstalls "$SRC_TGZ")
+
+# EOF
diff --git a/deepseq.cabal b/deepseq.cabal
index 7df56e14edaed81d29895ab87baed308ff0c1a8c..79dbd8d82f699633adc5530c4bf85f825560c853 100644
--- a/deepseq.cabal
+++ b/deepseq.cabal
@@ -22,7 +22,7 @@ description:
     data types.
 build-type:     Simple
 cabal-version:  >=1.10
-tested-with:    GHC==7.8.3, GHC==7.8.2, GHC==7.8.1, GHC==7.6.3, GHC==7.6.2, GHC==7.6.1, GHC==7.4.2, GHC==7.4.1, GHC==7.2.2, GHC==7.2.1, GHC==7.0.4, GHC==7.0.3, GHC==7.0.2, GHC==7.0.1
+tested-with:    GHC==7.11.*, GHC==7.10.1, GHC==7.8.4, GHC==7.8.3, GHC==7.8.2, GHC==7.8.1, GHC==7.6.3, GHC==7.6.2, GHC==7.6.1, GHC==7.4.2, GHC==7.4.1, GHC==7.2.2, GHC==7.2.1, GHC==7.0.4, GHC==7.0.3, GHC==7.0.2, GHC==7.0.1
 
 extra-source-files: changelog.md