diff --git a/Dockerfile b/Dockerfile
index e224a6f..992bf9f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -37,8 +37,9 @@ RUN \
  git clone https://github.com/docker/compose.git && \
  cd /compose && \
  git checkout "${COMPOSE_VERSION}" && \
- pip3 install virtualenv==16.2.0 && \
- pip3 install tox==2.9.1 && \
+ pip3 install -U pip && \
+ pip install -U --ignore-installed virtualenv==20.0.30 && \
+ pip install -U --ignore-installed tox==3.19.0 && \
  PY_ARG=$(printf "$(python3 -V)" | awk '{print $2}' | awk 'BEGIN{FS=OFS="."} NF--' | sed 's|\.||g' | sed 's|^|py|g') && \
  sed -i "s|envlist = .*|envlist = ${PY_ARG},pre-commit|g" tox.ini && \
  tox --notest && \
diff --git a/Dockerfile.aarch64 b/Dockerfile.aarch64
index 1847053..f1e6c1b 100644
--- a/Dockerfile.aarch64
+++ b/Dockerfile.aarch64
@@ -37,8 +37,9 @@ RUN \
  git clone https://github.com/docker/compose.git && \
  cd /compose && \
  git checkout "${COMPOSE_VERSION}" && \
- pip3 install virtualenv==16.2.0 && \
- pip3 install tox==2.9.1 && \
+ pip3 install -U pip && \
+ pip install -U --ignore-installed virtualenv==20.0.30 && \
+ pip install -U --ignore-installed tox==3.19.0 && \
  PY_ARG=$(printf "$(python3 -V)" | awk '{print $2}' | awk 'BEGIN{FS=OFS="."} NF--' | sed 's|\.||g' | sed 's|^|py|g') && \
  sed -i "s|envlist = .*|envlist = ${PY_ARG},pre-commit|g" tox.ini && \
  tox --notest && \
diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 0a27eef..61cc031 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -37,8 +37,9 @@ RUN \
  git clone https://github.com/docker/compose.git && \
  cd /compose && \
  git checkout "${COMPOSE_VERSION}" && \
- pip3 install virtualenv==16.2.0 && \
- pip3 install tox==2.9.1 && \
+ pip3 install -U pip && \
+ pip install -U --ignore-installed virtualenv==20.0.30 && \
+ pip install -U --ignore-installed tox==3.19.0 && \
  PY_ARG=$(printf "$(python3 -V)" | awk '{print $2}' | awk 'BEGIN{FS=OFS="."} NF--' | sed 's|\.||g' | sed 's|^|py|g') && \
  sed -i "s|envlist = .*|envlist = ${PY_ARG},pre-commit|g" tox.ini && \
  tox --notest && \
diff --git a/README.md b/README.md
index c31313f..d552c70 100644
--- a/README.md
+++ b/README.md
@@ -127,6 +127,7 @@ Once registered you can define the dockerfile to use with `-f Dockerfile.aarch64
 
 ## Versions
 
+* **12.09.20:** - Bump tox and virtualenv versions.
 * **06.07.20:** - Publish docker-compose and docker-cli binaries in Github releases.
 * **01.07.20:** - Release alpine based images at `alpine` tag.
 * **04.06.20:** - Bump docker-cli to 19.03.8, auto-detect python3 version.
diff --git a/readme-vars.yml b/readme-vars.yml
index 3bb4001..a1882f6 100644
--- a/readme-vars.yml
+++ b/readme-vars.yml
@@ -133,6 +133,7 @@ full_custom_readme: |
 
   ## Versions
 
+  * **12.09.20:** - Bump tox and virtualenv versions.
   * **06.07.20:** - Publish docker-compose and docker-cli binaries in Github releases.
   * **01.07.20:** - Release alpine based images at `alpine` tag.
   * **04.06.20:** - Bump docker-cli to 19.03.8, auto-detect python3 version.
diff --git a/run.sh b/run.sh
index 8f0bc95..e653140 100644
--- a/run.sh
+++ b/run.sh
@@ -13,13 +13,16 @@
 # You can add additional volumes (or any docker run options) using
 # the $COMPOSE_OPTIONS environment variable.
 #
+# You can set a specific image tag from Docker Hub, such as "1.26.2-ls9", or "alpine"
+# using the $DOCKER_COMPOSE_IMAGE_TAG environment variable (defaults to "latest")
+#
 
 
 set -e
 
-VERSION="latest" # can be set to a specific version tag from docker hub, such as "1.25.5", or "alpine"
-IMAGE="linuxserver/docker-compose:$VERSION"
-
+# set image tag to latest if not globally set
+DOCKER_COMPOSE_IMAGE_TAG="${DOCKER_COMPOSE_IMAGE_TAG:-latest}"
+IMAGE="linuxserver/docker-compose:$DOCKER_COMPOSE_IMAGE_TAG"
 
 # Setup options for connecting to docker host
 if [ -z "$DOCKER_HOST" ]; then