diff --git a/.travis.yml b/.travis.yml
index 4ad40d6..334dd15 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -28,12 +28,10 @@ install:
       bash $MINICONDA_FILE -b
 
       export PATH=/Users/travis/miniconda3/bin:$PATH
-
-      conda config --set show_channel_urls true
-      conda update --yes conda
-      conda install --yes conda-build=1.20.0 jinja2 anaconda-client
       conda config --add channels conda-forge
-      
+      conda config --set show_channel_urls true
+      conda install --yes --quiet conda-forge-build-setup
+      source run_conda_forge_build_setup
 
 script:
   - conda build ./recipe
diff --git a/README.md b/README.md
index c82b6dc..8cd9413 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ About conda-forge
 
 conda-forge is a community-led conda channel of installable packages.
 In order to provide high-quality builds, the process has been automated into the
-conda-forge GitHub organization. The conda-forge organization contains one repository 
+conda-forge GitHub organization. The conda-forge organization contains one repository
 for each of the installable packages. Such a repository is known as a *feedstock*.
 
 A feedstock is made up of a conda recipe (the instructions on what and how to build
@@ -71,7 +71,7 @@ Current build status
 ====================
 
 Linux: [![Circle CI](https://circleci.com/gh/conda-forge/vega-feedstock.svg?style=svg)](https://circleci.com/gh/conda-forge/vega-feedstock)
-OSX: [![TravisCI](https://travis-ci.org/conda-forge/vega-feedstock.svg?branch=master)](https://travis-ci.org/conda-forge/vega-feedstock) 
+OSX: [![TravisCI](https://travis-ci.org/conda-forge/vega-feedstock.svg?branch=master)](https://travis-ci.org/conda-forge/vega-feedstock)
 Windows: [![AppVeyor](https://ci.appveyor.com/api/projects/status/github/conda-forge/vega-feedstock?svg=True)](https://ci.appveyor.com/project/conda-forge/vega-feedstock/branch/master)
 
 Current release info
@@ -92,7 +92,7 @@ install and use.
 
 In order to produce a uniquely identifiable distribution:
  * If the version of a package **is not** being increased, please add or increase
-   the [``build/number``](http://conda.pydata.org/docs/building/meta-yaml.html#build-number-and-string). 
+   the [``build/number``](http://conda.pydata.org/docs/building/meta-yaml.html#build-number-and-string).
  * If the version of a package **is** being increased, please remember to return
    the [``build/number``](http://conda.pydata.org/docs/building/meta-yaml.html#build-number-and-string)
    back to 0.
diff --git a/appveyor.yml b/appveyor.yml
index fbfa9d3..bd534b6 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,6 +1,6 @@
 # This file was automatically generated by conda-smithy. To update a component of this
 # file, make changes to conda-forge.yaml and/or recipe/meta.yaml, and run
-# "conda-smithy regenerate".
+# "conda smithy rerender".
 
 environment:
 
@@ -58,18 +58,14 @@ install:
     - cmd: rmdir C:\cygwin /s /q
     - appveyor DownloadFile "https://raw.githubusercontent.com/pelson/Obvious-CI/master/bootstrap-obvious-ci-and-miniconda.py"
     - cmd: python bootstrap-obvious-ci-and-miniconda.py %CONDA_INSTALL_LOCN% %TARGET_ARCH% %CONDA_PY:~0,1% --without-obvci
-    - cmd: set PATH=%CONDA_INSTALL_LOCN%;%CONDA_INSTALL_LOCN%\scripts;%PATH%
+    - cmd: call %CONDA_INSTALL_LOCN%\Scripts\activate.bat
     - cmd: set PYTHONUNBUFFERED=1
 
     - cmd: conda config --set show_channel_urls true
     - cmd: conda install -c pelson/channel/development --yes --quiet obvious-ci
     - cmd: conda config --add channels conda-forge
-    - cmd: conda info
-    - cmd: conda install -n root --quiet --yes conda-build anaconda-client jinja2 setuptools
-    # Workaround for Python 3.4 and x64 bug in latest conda-build.
-    # FIXME: Remove once there is a release that fixes the upstream issue
-    # ( https://github.com/conda/conda-build/issues/895 ).
-    - cmd: if "%TARGET_ARCH%" == "x64" if "%CONDA_PY%" == "34" conda install conda-build=1.20.0 --yes
+    - cmd: conda install -n root --quiet --yes conda-forge-build-setup
+    - cmd: run_conda_forge_build_setup
 
 # Skip .NET project specific build phase.
 build: off
diff --git a/ci_support/run_docker_build.sh b/ci_support/run_docker_build.sh
index c8af217..203b1fe 100755
--- a/ci_support/run_docker_build.sh
+++ b/ci_support/run_docker_build.sh
@@ -14,7 +14,6 @@ config=$(cat <<CONDARC
 
 channels:
  - conda-forge
-
  - defaults # As we need conda-build
 
 conda-build:
@@ -39,9 +38,8 @@ echo "$config" > ~/.condarc
 # A lock sometimes occurs with incomplete builds. The lock file is stored in build_artefacts.
 conda clean --lock
 
-conda update --yes --all
-conda install --yes conda-build
-conda info
+conda install --yes --quiet conda-forge-build-setup
+source run_conda_forge_build_setup
 
 # Embarking on 3 case(s).
     set -x
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 8f47c87..aca782e 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "0.4.1" %}
+{% set version = "0.4.2" %}
 
 package:
   name: vega
@@ -7,10 +7,10 @@ package:
 source:
   fn: vega-{{ version }}.tar.gz
   url: https://pypi.io/packages/source/v/vega/vega-{{ version }}.tar.gz
-  md5: 9cc2c953e7076eb6d7ab534f05d59219
+  md5: 1b5ba6ce77d4c240f6dde55cb8df5dd9
 
 build:
-  number: 2
+  number: 0
   script: python setup.py install --single-version-externally-managed --record=record.txt
 
 requirements: