diff --git a/.travis.yml b/.travis.yml
index 9e7ef36a..dfaa70cc 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -15,7 +15,7 @@ matrix:
     include:
         - name: "Linux; gcc 5.4; debug"
           os: linux
-          python: "3.6"
+          python: "3.5"
           addons:
               apt:
                   sources:
@@ -26,7 +26,7 @@ matrix:
               - MATRIX_EVAL="CC=gcc-5 && CXX=g++-5"
               - TRAVIS_BUILD_TYPE=Debug
               - TRAVIS_CMAKE_GENERATOR="Unix Makefiles"
-              - TRAVIS_PYTHON_VERSION=3.6
+              - TRAVIS_PYTHON_VERSION=3.5
           before_install:
               - ./environment/travis/linux/before_install.sh
           install:
@@ -39,7 +39,7 @@ matrix:
 
         - name: "Linux; gcc 8; release"
           os: linux
-          python: "3.6"
+          python: "3.5"
           addons:
               apt:
                   sources:
@@ -50,7 +50,7 @@ matrix:
               - MATRIX_EVAL="CC=gcc-8 && CXX=g++-8"
               - TRAVIS_BUILD_TYPE=Release
               - TRAVIS_CMAKE_GENERATOR="Unix Makefiles"
-              - TRAVIS_PYTHON_VERSION=3.6
+              - TRAVIS_PYTHON_VERSION=3.5
           before_install:
               - ./environment/travis/linux/before_install.sh
           install:
diff --git a/environment/travis/script.sh b/environment/travis/script.sh
index 669b5216..bc739bd5 100755
--- a/environment/travis/script.sh
+++ b/environment/travis/script.sh
@@ -3,11 +3,6 @@ set -e
 set -v
 
 
-echo $CC
-echo $CXX
-python$TRAVIS_PYTHON_VERSION --version
-python$TRAVIS_PYTHON_VERSION -c "import numpy as n; print(n.__version__); print(n.get_include());"
-
 cd $TRAVIS_BUILD_DIR/build
 cmake --build . --config ${TRAVIS_BUILD_TYPE} --target all -- -j2