diff --git a/.travis.yml b/.travis.yml
index 31f075a3..9deb5e88 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,9 +28,9 @@ before_cache:
 
 matrix:
   include:
-    - compiler: "ghc-8.6.2"
+    - compiler: "ghc-8.6.3"
     # env: TEST=--disable-tests BENCH=--disable-benchmarks
-      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.6.2], sources: [hvr-ghc]}}
+      addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.4,ghc-8.6.3], sources: [hvr-ghc]}}
     - compiler: "ghc-head"
       env: GHCHEAD=true
       addons: {apt: {packages: [ghc-ppa-tools,cabal-install-head,ghc-head], sources: [hvr-ghc]}}
@@ -84,7 +84,7 @@ install:
   - "echo '  type: git' >> cabal.project"
   - "echo '  location: https://github.com/goldfirere/th-desugar' >> cabal.project"
   - "echo '  tag: 567145eddeb5f6692a75e74d4a2dc575b1ad6f29' >> cabal.project"
-  - "printf 'write-ghc-environment-files: always' >> cabal.project"
+  - "printf 'write-ghc-environment-files: always\\n' >> cabal.project"
   - touch cabal.project.local
   - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- singletons | grep -vw -- accept-all | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
@@ -113,7 +113,7 @@ script:
   - "echo '  type: git' >> cabal.project"
   - "echo '  location: https://github.com/goldfirere/th-desugar' >> cabal.project"
   - "echo '  tag: 567145eddeb5f6692a75e74d4a2dc575b1ad6f29' >> cabal.project"
-  - "printf 'write-ghc-environment-files: always' >> cabal.project"
+  - "printf 'write-ghc-environment-files: always\\n' >> cabal.project"
   - touch cabal.project.local
   - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- singletons | grep -vw -- accept-all | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
diff --git a/singletons.cabal b/singletons.cabal
index 7c3d2ac3..847e2617 100644
--- a/singletons.cabal
+++ b/singletons.cabal
@@ -9,7 +9,7 @@ author:         Richard Eisenberg <rae@cs.brynmawr.edu>, Jan Stolarek <jan.stola
 maintainer:     Ryan Scott <ryan.gl.scott@gmail.com>
 bug-reports:    https://github.com/goldfirere/singletons/issues
 stability:      experimental
-tested-with:    GHC == 8.6.2
+tested-with:    GHC == 8.6.3
 extra-source-files: README.md, CHANGES.md,
                     tests/compile-and-dump/buildGoldenFiles.awk,
                     tests/compile-and-dump/GradingClient/*.hs,
diff --git a/util/accept-all.cabal b/util/accept-all.cabal
index cb4a2067..54891c7e 100644
--- a/util/accept-all.cabal
+++ b/util/accept-all.cabal
@@ -7,7 +7,7 @@ author:         Richard Eisenberg <rae@cs.brynmawr.edu>, Jan Stolarek <jan.stola
 maintainer:     Richard Eisenberg <rae@cs.brynmawr.edu>, Jan Stolarek <jan.stolarek@p.lodz.pl>
 bug-reports:    https://github.com/goldfirere/singletons/issues
 stability:      stable
-tested-with:    GHC == 8.6.2
+tested-with:    GHC == 8.6.3
 license:        BSD3
 license-file:   LICENSE
 build-type:     Simple