diff --git a/.travis.yml b/.travis.yml
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@
 #
 #   runghc make_travis_yml_2.hs 'dwergaz.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
@@ -28,18 +28,21 @@
 
 matrix:
   include:
-    - compiler: "ghc-8.4.3"
+    - compiler: "ghc-8.6.2"
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.4.3], 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-2.2,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-2.2,ghc-8.0.2], sources: [hvr-ghc]}}
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.0.2], sources: [hvr-ghc]}}
     - compiler: "ghc-7.10.3"
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.10.3], sources: [hvr-ghc]}}
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-7.10.3], sources: [hvr-ghc]}}
 
 before_install:
   - HC=${CC}
@@ -66,7 +69,7 @@
   - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
   - "printf 'packages: \".\"\\n' > cabal.project"
   - touch cabal.project.local
-  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
+  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- dwergaz | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
   - cat cabal.project.local || true
   - if [ -f "./configure.ac" ]; then
@@ -82,13 +85,13 @@
 # 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/dwergaz-*.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: dwergaz-*/*.cabal\\n' > cabal.project"
   - touch cabal.project.local
-  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
+  - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- dwergaz | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
   - cat cabal.project.local || true
   # this builds all libraries and executables (without tests/benchmarks)
@@ -102,7 +105,6 @@
   - (cd dwergaz-* && 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
diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -19,3 +19,7 @@
 ## 0.2.0.2  -- 2018-06-23
 
 * Loosened constraints on `base` for compatibility with GHC 8.4.3.
+
+## 0.2.0.3  -- 2018-11-14
+
+* Loosened constraints on `base` for compatibility with GHC 8.6.2.
diff --git a/dwergaz.cabal b/dwergaz.cabal
--- a/dwergaz.cabal
+++ b/dwergaz.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                dwergaz
-version:             0.2.0.2
+version:             0.2.0.3
 synopsis:            A minimal testing library
 description:         dwergaz is a minimal testing library with no external dependencies.
 license:             BSD3
@@ -14,7 +14,7 @@
 category:            Testing
 build-type:          Simple
 cabal-version:       >=1.10
-tested-with:         GHC == 7.10.3, GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.3
+tested-with:         GHC == 7.10.3, GHC == 8.0.2, GHC == 8.2.2, GHC == 8.4.4, GHC == 8.6.2
 
 extra-source-files:
   .gitignore
@@ -30,7 +30,7 @@
   exposed-modules:     Test.Dwergaz
   -- other-modules:
   -- other-extensions:
-  build-depends:       base >=4.8 && <4.12
+  build-depends:       base >=4.8 && <4.13
   hs-source-dirs:      src
   default-language:    Haskell2010
   ghc-options:         -Wall
@@ -38,7 +38,7 @@
 test-suite tests
   type:                exitcode-stdio-1.0
   main-is:             Main.hs
-  build-depends:       base >=4.8 && <4.12
+  build-depends:       base >=4.8 && <4.13
                      , dwergaz
   hs-source-dirs:      tests
   default-language:    Haskell2010
diff --git a/src/Test/Dwergaz.hs b/src/Test/Dwergaz.hs
--- a/src/Test/Dwergaz.hs
+++ b/src/Test/Dwergaz.hs
@@ -3,7 +3,7 @@
 -- |
 -- Module      : Test.Dwergaz
 -- Description : A minimal testing library
--- Copyright   : (c) 2017, Henry Till
+-- Copyright   : (c) 2017-2018, Henry Till
 -- License     : BSD3
 -- Maintainer  : henrytill@gmail.com
 -- Stability   : experimental