diff --git a/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile b/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile
index 2403a50..775e549 100644
--- a/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile
+++ b/util/dockerfiles/ubuntu-18.04_all-dependencies/Dockerfile
@@ -32,3 +32,6 @@
     libprotobuf-dev protobuf-compiler libprotoc-dev libgoogle-perftools-dev \
     python3-dev python3 python3-six doxygen libboost-all-dev \
     libhdf5-serial-dev python3-pydot libpng-dev libelf-dev pkg-config
+
+RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 10
+RUN update-alternatives --install /usr/bin/python python /usr/bin/python2 1
diff --git a/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile b/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile
index 5ec6784..53a7d92 100644
--- a/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile
+++ b/util/dockerfiles/ubuntu-18.04_min-dependencies/Dockerfile
@@ -30,3 +30,6 @@
 RUN apt -y upgrade
 RUN apt -y install build-essential scons zlib1g-dev m4 python3-dev python3 \
     python3-six
+
+RUN update-alternatives --install /usr/bin/python python /usr/bin/python3 10
+RUN update-alternatives --install /usr/bin/python python /usr/bin/python2 1