diff --git a/.travis.yml b/.travis.yml
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 #
 #   runghc make_travis_yml_2.hs 'lens-toml-parser.cabal'
 #
-# For more information, see https://github.com/hvr/multi-ghc-travis
+# For more information, see https://github.com/haskell-CI/haskell-ci
 #
 language: c
 sudo: false
@@ -28,12 +28,18 @@
 
 matrix:
   include:
-    - compiler: "ghc-8.0.2"
+    - compiler: "ghc-8.6.2"
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-8.0.2], sources: [hvr-ghc]}}
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.6.2], sources: [hvr-ghc]}}
+    - compiler: "ghc-8.4.4"
+    # env: TEST=--disable-tests BENCH=--disable-benchmarks
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.4.4], sources: [hvr-ghc]}}
     - compiler: "ghc-8.2.2"
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-8.2.2], sources: [hvr-ghc]}}
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.2.2], sources: [hvr-ghc]}}
+    - compiler: "ghc-8.0.2"
+    # env: TEST=--disable-tests BENCH=--disable-benchmarks
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.0.2], sources: [hvr-ghc]}}
 
 before_install:
   - HC=${CC}
@@ -51,14 +57,18 @@
   - BENCH=${BENCH---enable-benchmarks}
   - TEST=${TEST---enable-tests}
   - HADDOCK=${HADDOCK-true}
-  - INSTALLED=${INSTALLED-true}
+  - UNCONSTRAINED=${UNCONSTRAINED-true}
+  - NOINSTALLEDCONSTRAINTS=${NOINSTALLEDCONSTRAINTS-false}
   - GHCHEAD=${GHCHEAD-false}
   - travis_retry cabal update -v
   - "sed -i.bak 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config"
   - rm -fv cabal.project cabal.project.local
   - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
   - "printf 'packages: \".\"\\n' > cabal.project"
-  - cat cabal.project
+  - touch cabal.project.local
+  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- lens-toml-parser | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
+  - cat cabal.project || true
+  - cat cabal.project.local || true
   - if [ -f "./configure.ac" ]; then
       (cd "." && autoreconf -i);
     fi
@@ -72,18 +82,18 @@
 # any command which exits with a non-zero exit code causes the build to fail.
 script:
   # test that source-distributions can be generated
-  - (cd "." && cabal sdist)
-  - mv "."/dist/lens-toml-parser-*.tar.gz ${DISTDIR}/
+  - cabal new-sdist all
+  - mv dist-newstyle/sdist/*.tar.gz ${DISTDIR}/
   - cd ${DISTDIR} || false
   - find . -maxdepth 1 -name '*.tar.gz' -exec tar -xvf '{}' \;
   - "printf 'packages: lens-toml-parser-*/*.cabal\\n' > cabal.project"
-  - cat cabal.project
+  - touch cabal.project.local
+  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- lens-toml-parser | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
+  - cat cabal.project || true
+  - cat cabal.project.local || true
   # this builds all libraries and executables (without tests/benchmarks)
   - cabal new-build -w ${HC} --disable-tests --disable-benchmarks all
 
-  # Build with installed constraints for packages in global-db
-  - if $INSTALLED; then echo cabal new-build -w ${HC} --disable-tests --disable-benchmarks $(${HCPKG} list --global --simple-output --names-only | sed 's/\([a-zA-Z0-9-]\{1,\}\) */--constraint="\1 installed" /g') all | sh; else echo "Not building with installed constraints"; fi
-
   # build & run tests, build benchmarks
   - cabal new-build -w ${HC} ${TEST} ${BENCH} all
   - if [ "x$TEST" = "x--enable-tests" ]; then cabal new-test -w ${HC} ${TEST} ${BENCH} all; fi
@@ -92,8 +102,10 @@
   - (cd lens-toml-parser-* && cabal check)
 
   # haddock
-  - rm -rf ./dist-newstyle
   - if $HADDOCK; then cabal new-haddock -w ${HC} ${TEST} ${BENCH} all; else echo "Skipping haddock generation";fi
+
+  # Build without installed constraints for packages in global-db
+  - if $UNCONSTRAINED; then rm -f cabal.project.local; echo cabal new-build -w ${HC} --disable-tests --disable-benchmarks all; else echo "Not building without installed constraints"; fi
 
 # REGENDATA ["lens-toml-parser.cabal"]
 # EOF
diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -13,3 +13,8 @@
 
 * Refactored (used `Right` instead of `pure` in prism definitions).
 * Simplified tests/Main.hs to appease hlint.
+
+## 0.1.0.3  -- 2018-11-14
+
+* Loosened constraints on `base`, `containers`, `profunctors`, and `time`.
+* Tweaked tests/Main.hs to appease hlint.
diff --git a/lens-toml-parser.cabal b/lens-toml-parser.cabal
--- a/lens-toml-parser.cabal
+++ b/lens-toml-parser.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                lens-toml-parser
-version:             0.1.0.2
+version:             0.1.0.3
 synopsis:            Lenses for toml-parser
 description:         This library provides lenses for toml-parser.
 license:             ISC
@@ -14,7 +14,7 @@
 category:            Language, Lenses
 build-type:          Simple
 cabal-version:       >=1.10
-tested-with:         GHC == 8.0.2, GHC == 8.2.2
+tested-with:         GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.2
 
 extra-source-files:
   .gitignore
@@ -31,10 +31,10 @@
   exposed-modules:     TOML.Lens
   -- other-modules:       
   -- other-extensions:    
-  build-depends:       base        >=4.8 && <4.11
+  build-depends:       base        >=4.8 && <4.13
                      , text        >=1.2 && <1.3
-                     , time        >=1.5 && <1.9
-                     , profunctors >=5.2 && <5.3
+                     , time        >=1.5 && <1.10
+                     , profunctors >=5.2 && <5.4
                      , toml-parser >=0.1 && <0.2
   hs-source-dirs:      src
   default-language:    Haskell2010
@@ -43,8 +43,8 @@
 test-suite tests
   type:                exitcode-stdio-1.0
   main-is:             Main.hs
-  build-depends:       base        >=4.8 && <4.11
-                     , containers  >=0.5 && <0.6
+  build-depends:       base        >=4.8 && <4.13
+                     , containers  >=0.5 && <0.7
                      , text        >=1.2 && <1.3
                      , dwergaz     >=0.2 && <0.3
                      , toml-parser >=0.1 && <0.2
diff --git a/src/TOML/Lens.hs b/src/TOML/Lens.hs
--- a/src/TOML/Lens.hs
+++ b/src/TOML/Lens.hs
@@ -1,7 +1,7 @@
 -- |
 -- Module      : TOML.Lens
 -- Description : Lenses for toml-parser
--- Copyright   : (c) 2017, Henry Till
+-- Copyright   : (c) 2017-2018, Henry Till
 -- License     : ISC
 -- Maintainer  : henrytill@gmail.com
 -- Stability   : experimental
diff --git a/tests/Main.hs b/tests/Main.hs
--- a/tests/Main.hs
+++ b/tests/Main.hs
@@ -141,5 +141,5 @@
 main =  do
   ex <- readTOMLFile "./example/example-v0.4.0.toml"
   let rs = runTests ex
-  _  <- mapM_ print rs
+  mapM_ print rs
   unless (all isPassed rs) exitFailure
