diff --git a/tools/docker/Dockerfile.ubuntu20.04 b/tools/docker/Dockerfile.ubuntu20.04
index 8a74180f..a7b3c446 100644
--- a/tools/docker/Dockerfile.ubuntu20.04
+++ b/tools/docker/Dockerfile.ubuntu20.04
@@ -50,7 +50,7 @@ RUN apt-get update && DEBIAN_FRONTEND="noninteractive" apt-get install -y --no-i
         ocamlbuild \
         pkg-config \
         protobuf-compiler \
-        python \
+        python-is-python3 \
         python3-pip \
         sudo \
         unzip \