diff --git a/.travis.yml b/.travis.yml
index fc303b0f..0cefe616 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,7 +6,7 @@ os:
 julia:
   - 1.1
   - nightly
-  
+
 matrix:
   allow_failures:
     - julia: nightly
@@ -16,5 +16,8 @@ before_install:
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then pwd ; fi
   - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then ./test/install_wkhtmltoimage.sh ; fi
 
+env:
+  - PYTHON = ""
+
 notifications:
   email: true