diff --git a/.travis.yml b/.travis.yml
--- a/.travis.yml
+++ b/.travis.yml
@@ -26,6 +26,18 @@
 #     addons: {apt: {packages: [libfcgi-dev,libgmp-dev]}}
 matrix:
   include:
+  # We grab the appropriate GHC and cabal-install versions from hvr's PPA. See:
+  # https://github.com/hvr/multi-ghc-travis
+  - env: BUILD=cabal GHCVER=8.0.1 CABALVER=1.24 HAPPYVER=1.19.5 ALEXVER=3.1.7
+    compiler: ": #GHC 8.0.1"
+    addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1,happy-1.19.5,alex-3.1.7], sources: [hvr-ghc]}}
+
+  # Build with the newest GHC and cabal-install. This is an accepted failure,
+  # see below.
+  - env: BUILD=cabal GHCVER=head  CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
+    compiler: ": #GHC HEAD"
+    addons: {apt: {packages: [cabal-install-head,ghc-head,happy-1.19.5,alex-3.1.7], sources: [hvr-ghc]}}
+
   # Nightly builds are allowed to fail
   - env: BUILD=stack ARGS="--resolver nightly"
     compiler: ": #stack nightly"
@@ -36,6 +48,7 @@
     os: osx
 
   allow_failures:
+  - env: BUILD=cabal GHCVER=head  CABALVER=head HAPPYVER=1.19.5 ALEXVER=3.1.7
   - env: BUILD=stack ARGS="--resolver nightly"
 
 before_install:
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@
 executable your-executable
   language:           Haskell2010
   default-extensions: NoImplicitPrelude
-  build-depends:      preliminaries >= 0.1.5 < 1
+  build-depends:      preliminaries >= 0.1.6 < 1
   …
 ```
 
diff --git a/preliminaries.cabal b/preliminaries.cabal
--- a/preliminaries.cabal
+++ b/preliminaries.cabal
@@ -1,5 +1,5 @@
 name:                preliminaries
-version:             0.1.5.0
+version:             0.1.6.0
 synopsis:            A larger alternative to the Prelude.
 description:         A GHC-only alternative to the Prelude with a large amount of imports available by default.
 homepage:            http://github.com/kerscher/preliminaries
diff --git a/source/Preliminaries.hs b/source/Preliminaries.hs
--- a/source/Preliminaries.hs
+++ b/source/Preliminaries.hs
@@ -26,7 +26,7 @@
 @
 …
 default-extensions: NoImplicitPrelude
-build-depends:      preliminaries >= 0.1.5 < 1
+build-depends:      preliminaries >= 0.1.6 < 1
 @
 
 And on each file, add @import Preliminaries@.
@@ -117,7 +117,6 @@
   , rseq, rdeepseq
   , rpar, rparWith
   , evalTraversable, parTraversable, parMap
-  , ($|), ($||), (.|), (.||), (-|), (-||)
   , Eval, runEval
   )
 import ClassyPrelude.Conduit
diff --git a/stack.yaml b/stack.yaml
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,4 +1,4 @@
-resolver: nightly-2016-08-17
+resolver: lts-7.18
 packages:
 - '.'
 extra-deps: []