diff --git a/.travis.yml b/.travis.yml
index 5abb6f90e99..8d7c5580a80 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -12,6 +12,16 @@ matrix:
       env: PYTHON_VERSION=python3 ONNX_ML=0
       language: python
       python: "3.6"
+    - os: linux
+      sudo: required
+      env: PYTHON_VERSION=python3 ONNX_ML=0 ONNX_DEBUG=1
+      language: python
+      python: "3.6"
+    - os: linux
+      sudo: required
+      env: PYTHON_VERSION=python3 ONNX_ML=1 ONNX_DEBUG=1
+      language: python
+      python: "3.6"
     - os: osx
       osx_image: xcode9.3
       env: PYTHON_VERSION=python2 ONNX_ML=0
@@ -34,6 +44,9 @@ matrix:
     - os: osx
       osx_image: xcode9.3
       env: PYTHON_VERSION=python3
+    - os: osx
+      osx_image: xcode9.3
+      env: PYTHON_VERSION=python3 ONNX_DEBUG=1
     - os: linux
       sudo: required
       env: PYTHON_VERSION=python2 LITE=1
diff --git a/.travis/install.sh b/.travis/install.sh
index 1c6555eea83..edfc75db787 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -13,5 +13,9 @@ fi
 export CMAKE_ARGS="${CMAKE_ARGS} -DONNXIFI_DUMMY_BACKEND=ON"
 export ONNX_NAMESPACE=ONNX_NAMESPACE_FOO_BAR_FOR_CI
 
+if [ "${ONNX_DEBUG}" == "1" ]; then
+  export DEBUG=1
+fi
+
 time python setup.py --quiet bdist_wheel --universal --dist-dir .
 find . -maxdepth 1 -name "*.whl" -ls -exec pip install {} \;