diff --git a/tools/travis_install_optional.sh b/tools/travis_install_optional.sh
index 2d099e3e..4b544a33 100755
--- a/tools/travis_install_optional.sh
+++ b/tools/travis_install_optional.sh
@@ -33,8 +33,12 @@ if [[ $TRAVIS_PYTHON_VERSION != 3.2 ]]; then
     pip install -q imread
 fi
 
-# Install SimpleITK from wheelhouse if available
-pip install -q SimpleITK $WHEELHOUSE; true
+# Install SimpleITK from wheelhouse if available (not 3.2 or 3.4)
+if [[ $TRAVIS_PYTHON_VERSION =~ 3\.[24] ]]; then
+    echo "SimpleITK unavailable on $TRAVIS_PYTHON_VERSION"
+else
+    pip install -q SimpleITK $WHEELHOUSE
+fi
 
 sudo apt-get install -q libfreeimage3
 pip install -q astropy $WHEELHOUSE