diff --git a/.travis.yml b/.travis.yml
index f081a464..4ad94b32 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -39,7 +39,14 @@ script:
       if [ "$TRAVIS_PYTHON_VERSION" != "$test_env_version" ] && [ "$JEDI_TEST_ENVIRONMENT" != "interpreter" ]; then
         python_bin=python$test_env_version
         python_path="$(which $python_bin || true)"
-        if [ "${python_path#/opt/pyenv/shims}" != "$python_path" ]; then
+        if [ -z "$python_path" ]; then
+          # Only required for JEDI_TEST_ENVIRONMENT=38, because it's not always
+          # available.
+          download_name=python-$test_env_version
+          wget https://s3.amazonaws.com/travis-python-archives/binaries/ubuntu/16.04/x86_64/$download_name.tar.bz2
+          sudo tar xjf $download_name.tar.bz2 --directory / opt/python
+          ln -s "/opt/python/${test_env_version}/bin/python" /home/travis/bin/$python_bin
+        elif [ "${python_path#/opt/pyenv/shims}" != "$python_path" ]; then
           # Activate pyenv version (required with JEDI_TEST_ENVIRONMENT=36).
           pyenv_bin="$(pyenv whence --path "$python_bin" | head -n1)"
           ln -s "$pyenv_bin" /home/travis/bin/$python_bin