diff --git a/examples/proteus.darwin.yaml b/examples/proteus.darwin.yaml
index f3d12a551..a73fa5d0c 100644
--- a/examples/proteus.darwin.yaml
+++ b/examples/proteus.darwin.yaml
@@ -82,3 +82,9 @@ packages:
   yaml:
   pytest:
   pytest-xdist:
+  boost:
+    toolset: darwin
+  remus:
+  gdal:
+  vtk:
+  smtk:
diff --git a/pkgs/cmake.yaml b/pkgs/cmake.yaml
index a3d7d922c..40af41b73 100644
--- a/pkgs/cmake.yaml
+++ b/pkgs/cmake.yaml
@@ -4,8 +4,8 @@ dependencies:
   build: [zlib, bzip2, curl, openssl, libidn, expat, ncurses]
 
 sources:
-- key: tar.gz:3j6mgtq44hmc4z5dfkyidqbmfbcvgtgy
-  url: https://cmake.org/files/v3.4/cmake-3.4.2.tar.gz
+- key: tar.gz:zzozcyjznydfagya4uutg6brkcuhymyi
+  url: https://cmake.org/files/v3.8/cmake-3.8.1.tar.gz
 
 build_stages:
 - when: platform == 'Darwin'
diff --git a/pkgs/vtk/vtk.yaml b/pkgs/vtk/vtk.yaml
index fe7e656ec..b1bb60d15 100644
--- a/pkgs/vtk/vtk.yaml
+++ b/pkgs/vtk/vtk.yaml
@@ -15,7 +15,7 @@ sources:
   url: http://www.vtk.org/files/release/7.1/VTK-7.1.0.tar.gz
 
 defaults:
-  # lib/vtk-5.10/libvtkHybrid.so.5.10.1 contains hard-coded path
+  # lib/vtk-7.1/libvtkHybrid.so.7.1.0 contains hard-coded path
   relocatable: false
   vtk_use_tk: false
 
@@ -29,14 +29,6 @@ build_stages:
     export PYTHONPATH=${ARTIFACT}/{{python_site_packages_rel}}:$PYTHONPATH
     mkdir -p ${ARTIFACT}/{{python_site_packages_rel}}
 
-- when: platform == 'Cygwin'
-  files: [vtk-5.10.1-cygwin.patch]
-  name: vtk_cygwin_patch
-  handler: bash
-  before: setup_builddir
-  bash: |
-    patch -p1 < _hashdist/vtk-5.10.1-cygwin.patch
-
 - name: configure
   extra:
     - '-D BUILD_TESTING:BOOL=OFF'