diff --git a/appveyor.yml b/appveyor.yml
index a93d87f..8c79821 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,4 +1,3 @@
-
 # 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".
@@ -22,6 +21,7 @@ environment:
   matrix:
     - TARGET_ARCH: x86
       CONDA_PY: 35
+
     - TARGET_ARCH: x64
       CONDA_PY: 35
 
@@ -49,10 +49,15 @@ install:
     - cmd: set PATH=%CONDA_INSTALL_LOCN%;%CONDA_INSTALL_LOCN%\scripts;%PATH%
     - cmd: set PYTHONUNBUFFERED=1
 
-    - cmd: conda install -c http://conda.binstar.org/pelson/channel/development --yes --quiet obvious-ci
-    - cmd: conda config --add channels http://conda.binstar.org/conda-forge
+    - 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
 
 # Skip .NET project specific build phase.
 build: off
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 050b75f..8d71ec9 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -21,10 +21,10 @@ build:
 
 requirements:
   build:
+    - python          # [win]
     - m4              # [unix]
     - libtool         # [unix]
     - gmp             # [unix]
-    - vc 14           # [win]
     - mpir            # [win]
     - mpfr
   run: