diff --git a/.haskell-ci b/.haskell-ci
index e8c5b9a..82d4a84 100644
--- a/.haskell-ci
+++ b/.haskell-ci
@@ -1,7 +1,7 @@
 # compiler supported and their equivalent LTS
 compiler: ghc-8.0 lts-9.21
-compiler: ghc-8.2 lts-10.4
-compiler: ghc-8.4 ghc-8.4-alpha2
+compiler: ghc-8.2 lts-11.6
+compiler: ghc-8.4 ghc-8.4.2
 
 # options
 # option: alias x=y z=v
diff --git a/.travis.yml b/.travis.yml
index e244fe9..eec4255 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-# ~*~ auto-generated by haskell-ci with config : 26f0e346401960c8aed161c0e7d667cbc8aaeff9264b6ea514e302ae9b0f6a79 ~*~
+# ~*~ auto-generated by haskell-ci with config : 7d7fe90696706f37292f4d718fa1a63b938490d653e3abf049623087b2e6e901 ~*~
 
 # Use new container infrastructure to enable caching
 sudo: false
@@ -48,7 +48,7 @@ script:
       # create the build stack.yaml
       case "$RESOLVER" in
       ghc-8.2)
-        echo "{ resolver: lts-10.4, packages: [ '.' ], extra-deps: [ basement-0.0.6, foundation-0.0.19, memory-0.14.14, gauge-0.2.1 ], flags: {} }" > stack.yaml
+        echo "{ resolver: lts-11.6, packages: [ '.' ], extra-deps: [ basement-0.0.6, foundation-0.0.19, memory-0.14.14, gauge-0.2.1 ], flags: {} }" > stack.yaml
         stack --no-terminal build --install-ghc --coverage --test --bench --no-run-benchmarks --haddock --no-haddock-deps
         ;;
       ghc-8.0)
@@ -60,7 +60,7 @@ script:
         stack --no-terminal build --install-ghc --coverage --test --bench --no-run-benchmarks --haddock --no-haddock-deps
         ;;
       ghc-8.4)
-        echo "{ setup-info: { ghc: { \"linux32-nopie\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-i386-deb8-linux.tar.xz\", sha256: \"be1a3b5de9f671199533d22f2810d9b62c6392b32b39833cd384a094566703c6\" } }, \"windows32\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-i386-unknown-mingw32.tar.xz\", sha256: \"3f4b9291ad35d89ca7b3561312a4329545aedceb5c4c8c5c4cf01550037376a1\" } }, \"linux64\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-deb8-linux.tar.xz\", sha256: \"55b54bce14661c19288c3413b8fab95d2b7fae407986323c7f0b6a732bec6a38\" } }, \"linux64-tinfo\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-deb8-linux.tar.xz\", sha256: \"55b54bce14661c19288c3413b8fab95d2b7fae407986323c7f0b6a732bec6a38\" } }, \"linux64-tinfo6\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-fedora27-linux.tar.xz\", sha256: \"47c7e4350c9560f984bde75b243aa10c91e37494152d87d20f84fcee857338ef\" } }, \"linux64-tinfo-nopie\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-fedora27-linux.tar.xz\", sha256: \"47c7e4350c9560f984bde75b243aa10c91e37494152d87d20f84fcee857338ef\" } }, \"linux64-nopie\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-deb8-linux.tar.xz\", sha256: \"55b54bce14661c19288c3413b8fab95d2b7fae407986323c7f0b6a732bec6a38\" } }, \"windows64\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-unknown-mingw32.tar.xz\", sha256: \"93dd7f80e3c645b79a91f3023046144ec88927961a3443019034e2893de43752\" } }, \"macosx\": { \"8.4.0.20180118\": { url: \"https://downloads.haskell.org/~ghc/8.4.1-alpha2/ghc-8.4.0.20180118-x86_64-apple-darwin.tar.xz\", sha256: \"b3119b255ab3d1a09fcf9919bddbbe2cd77f9175de14e4b23f20b40abe5edea1\" } } } }, resolver: ghc-8.4.0.20180118, compiler: ghc-8.4.0.20180118, compiler-check: match-exact, packages: [ '.' ], extra-deps: [ vector-0.12.0.1, basement-0.0.6, foundation-0.0.19, memory-0.14.14, QuickCheck-2.11.3, ansi-terminal-0.8.0.1, async-2.1.1.1, call-stack-0.1.0, clock-0.7.2, optparse-applicative-0.14.0.0, random-1.1, tagged-0.8.5, unbounded-delays-0.1.1.0, tasty-1.0.0.1, tasty-hunit-0.10.0.1, tasty-kat-0.0.3, tasty-quickcheck-0.9.2, ansi-wl-pprint-0.6.8.2, colour-2.3.4, tf-random-0.5, transformers-compat-0.5.1.4, primitive-0.6.3.0, gauge-0.2.1 ], flags: {}, allow-newer: true }" > stack.yaml
+        echo "{ resolver: ghc-8.4.2, packages: [ '.' ], extra-deps: [ vector-0.12.0.1, basement-0.0.6, foundation-0.0.19, memory-0.14.14, QuickCheck-2.11.3, ansi-terminal-0.8.0.1, async-2.1.1.1, call-stack-0.1.0, clock-0.7.2, optparse-applicative-0.14.0.0, random-1.1, tagged-0.8.5, unbounded-delays-0.1.1.0, tasty-1.0.0.1, tasty-hunit-0.10.0.1, tasty-kat-0.0.3, tasty-quickcheck-0.9.2, ansi-wl-pprint-0.6.8.2, colour-2.3.4, tf-random-0.5, transformers-compat-0.5.1.4, primitive-0.6.3.0, gauge-0.2.1 ], flags: {}, allow-newer: true }" > stack.yaml
         stack --no-terminal build --install-ghc --coverage --test --bench --no-run-benchmarks --haddock --no-haddock-deps
         ;;
       esac
@@ -75,3 +75,4 @@ script:
   esac
   set +ex
 
+