diff --git a/DESCRIPTION b/DESCRIPTION
index 82b7fb0..aed0f45 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: V8
 Type: Package
 Title: Embedded JavaScript and WebAssembly Engine for R
-Version: 4.1.0
+Version: 4.2.0
 Authors@R: person("Jeroen", "Ooms", role = c("aut", "cre"), email = "jeroen@berkeley.edu",
     comment = c(ORCID = "0000-0002-4035-0289"))
 Description: An R interface to V8: Google's open source JavaScript and WebAssembly 
diff --git a/NEWS b/NEWS
index c823c7f..193f5ac 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,6 @@
+4.2.0
+ - Use CXX17 on supported platforms. C++17 is required as of libv8 10.2
+
 4.1.0
  - engine_info() now includes a 'numeric_version' field for easy comparison
  - make js-to-r callback mechanism robust against -DRCPP_USE_UNWIND_PROTECT
diff --git a/README.md b/README.md
index 8c1952d..7d80c4b 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,6 @@
 
 > Embedded JavaScript and WebAssembly Engine for R
 
-[![AppVeyor Build Status](https://ci.appveyor.com/api/projects/status/github/jeroen/V8?branch=master&svg=true)](https://ci.appveyor.com/project/jeroen/V8)
 [![CRAN_Status_Badge](http://www.r-pkg.org/badges/version/V8)](http://cran.r-project.org/package=V8)
 [![CRAN RStudio mirror downloads](http://cranlogs.r-pkg.org/badges/V8)](http://cran.r-project.org/web/packages/V8/index.html)
 
diff --git a/appveyor.yml b/appveyor.yml
deleted file mode 100644
index efb1671..0000000
--- a/appveyor.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-# DO NOT CHANGE the "init" and "install" sections below
-
-# Download script file from GitHub
-init:
-  ps: |
-        $ErrorActionPreference = "Stop"
-        Invoke-WebRequest http://raw.github.com/krlmlr/r-appveyor/master/scripts/appveyor-tool.ps1 -OutFile "..\appveyor-tool.ps1"
-        Import-Module '..\appveyor-tool.ps1'
-
-install:
-  ps: Bootstrap
-
-# Adapt as necessary starting from here
-
-environment:
-  matrix:
-    - R_VERSION: 3.6.3
-    - R_VERSION: release
-
-build_script:
-  - travis-tool.sh install_deps
-
-test_script:
-  - travis-tool.sh run_tests
-
-on_failure:
-  - 7z a failure.zip *.Rcheck\*
-  - appveyor PushArtifact failure.zip
-
-artifacts:
-  - path: '*.Rcheck\**\*.log'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.out'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.fail'
-    name: Logs
-
-  - path: '*.Rcheck\**\*.Rout'
-    name: Logs
-
-  - path: '\*_*.tar.gz'
-    name: Bits
-
-  - path: '\*_*.zip'
-    name: Bits