# See the License for the specific language governing permissions and
# limitations under the License.
-FROM debian:jessie
+FROM debian:8
# Install Git and basic packages.
python-setuptools
# Install Python packages from PyPI
-RUN curl https://bootstrap.pypa.io/get-pip.py | python2.7
+RUN curl https://bootstrap.pypa.io/pip/2.7/get-pip.py | python2.7
RUN pip install --upgrade pip==19.3.1
RUN pip install virtualenv==16.7.9
-RUN pip install futures==2.2.0 enum34==1.0.4 protobuf==3.5.2.post1 six==1.10.0 twisted==17.5.0
+RUN pip install futures==3.1.1 enum34==1.1.10 protobuf==3.5.2.post1 six==1.16.0 twisted==19.10.0
#=================
# C++ dependencies