diff --git a/heroku-20-build/installed-packages.txt b/heroku-20-build/installed-packages.txt
index a44d5b7d..ba221a4c 100644
--- a/heroku-20-build/installed-packages.txt
+++ b/heroku-20-build/installed-packages.txt
@@ -525,6 +525,7 @@ postgresql-client-common
 postgresql-common
 postgresql-server-dev-12
 procps
+python-is-python3
 python2
 python2-minimal
 python2.7
diff --git a/heroku-20/installed-packages.txt b/heroku-20/installed-packages.txt
index 0ef96b70..e25a24e1 100644
--- a/heroku-20/installed-packages.txt
+++ b/heroku-20/installed-packages.txt
@@ -317,6 +317,7 @@ poppler-data
 postgresql-client-12
 postgresql-client-common
 procps
+python-is-python3
 python3
 python3-minimal
 python3.8
diff --git a/heroku-20/setup.sh b/heroku-20/setup.sh
index 6d6e7800..26ea1ad0 100755
--- a/heroku-20/setup.sh
+++ b/heroku-20/setup.sh
@@ -184,6 +184,7 @@ apt-get install -y --no-install-recommends \
     openssh-server \
     patch \
     postgresql-client-12 \
+    python-is-python3 \
     python3 \
     rename \
     rsync \