@@ -73,8 +73,8 @@ if(VTKPythonPackage_SUPERBUILD)
   include(ExternalProject)
 
   set(VTK_REPOSITORY "https://github.com/kitware/VTK.git")
-  # VTK nightly-master 2017-12-13
-  set(VTK_GIT_TAG "ab71574")
+  # VTK nightly-master 2018-05-14
+  set(VTK_GIT_TAG "v8.1.1")
 
   #-----------------------------------------------------------------------------
   # A separate project is used to download VTK, so that it can reused
 
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+# This script creates a tarball of the VTK Python package build tree. It is
+# downloaded by the external module build scripts and used to build their
+# Python package on GitHub CI services.
+
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd $SCRIPT_DIR/../..
+
+tar -c --to-stdout \
+  VTKPythonPackage/VTK-* \
+  VTKPythonPackage/standalone-* \
+  VTKPythonPackage/scripts > VTKPythonBuilds-linux.tar
+ZSTD=zstd
+if test -e /home/kitware/Support/zstd-build/programs/zstd; then
+  ZSTD=/home/kitware/Support/zstd-build/programs/zstd
+fi
+$ZSTD -f \
+  ./VTKPythonBuilds-linux.tar \
+  -o ./VTKPythonBuilds-linux.tar.zst
@@ -7,7 +7,13 @@ set -e -x
 # For example,
 # manylinux-build-wheels.sh cp27mu cp35
 if [[ $# -eq 0 ]]; then
-  PYBINARIES=(/opt/python/*/bin)
+  PYBIN=(/opt/python/*/bin)
+  PYBINARIES=()
+  for version in "${PYBIN[@]}"; do
+    if [[ ${version} == *"cp27"* || ${version} == *"cp35"* || ${version} == *"cp36"* ]]; then
+      PYBINARIES+=(${version})
+    fi
+  done
 else
   PYBINARIES=()
   for version in "$@"; do
 
@@ -23,12 +23,7 @@ popd > /dev/null 2>&1
 
 # Compile wheels re-using standalone project and archive cache
 for PYBIN in "${PYBINARIES[@]}"; do
-    if [[ ${PYBIN} == *"cp26"* || ${PYBIN} == *"cp33"* ]]; then
-        echo "Skipping ${PYBIN}"
-        continue
-    fi
-
-    PYTHON_EXECUTABLE=${PYBIN}/python
+    export PYTHON_EXECUTABLE=${PYBIN}/python
     PYTHON_INCLUDE_DIR=$( find -L ${PYBIN}/../include/ -name Python.h -exec dirname {} \; )
 
     echo ""
@@ -61,6 +56,8 @@ for PYBIN in "${PYBINARIES[@]}"; do
     # Cleanup
     ${PYBIN}/python setup.py clean
 
+    # Remove unnecessary files for building against VTK
+    find ${build_path} -name '*.o' -delete
 done
 
 # Fixup the wheels (update from 'linux' to 'manylinux1' tag)
@@ -72,10 +69,6 @@ done
 
 # Install packages and test
 for PYBIN in "${PYBINARIES[@]}"; do
-    if [[ ${PYBIN} == *"cp26"* || ${PYBIN} == *"cp33"* ]]; then
-        echo "Skipping ${PYBIN}"
-        continue
-    fi
     #${PYBIN}/pip install numpy
     ${PYBIN}/pip install vtk --no-cache-dir --no-index -f /work/dist
     #(cd $HOME && ${PYBIN}/python -c 'from itk import ITKCommon;')
 
@@ -1,4 +1,4 @@
-VERSION = '8.1.0'
+VERSION = '8.1.1'
 
 def get_versions():
     """Returns versions for the VTK Python package.
Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-VERSION = '8.1.0'`
	`1`	`+VERSION = '8.1.1'`
`2`	`2`
`3`	`3`	`def get_versions():`
`4`	`4`	`"""Returns versions for the VTK Python package.`