diff --git a/CHANGELOG.md b/CHANGELOG.md
index e40c09bc..77d88025 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 All notable changes to this project will be documented in this file.
 
 ## [Unreleased] (Available through Edge Tag)
+- No unreleased changes so far
+
+## [0.9.1] - 2021-10-21
+### Fixed
+- Refueling seperated in two parts is now joined into one session
+
 ### Changed
 - Updated API to 0.21.5
 
@@ -164,6 +170,7 @@ This is a complete rewrite of VWsFriend using a self developed API. It drops ioB
 Initial release to enable "latest" tag on dockerhub
 
 [unreleased]: https://github.com/tillsteinbach/VWsFriend/compare/v0.9.0...HEAD
+[0.9.1]: https://github.com/tillsteinbach/VWsFriend/releases/tag/v0.9.1
 [0.9.0]: https://github.com/tillsteinbach/VWsFriend/releases/tag/v0.9.0
 [0.8.1]: https://github.com/tillsteinbach/VWsFriend/releases/tag/v0.8.1
 [0.8.0]: https://github.com/tillsteinbach/VWsFriend/releases/tag/v0.8.0
diff --git a/vwsfriend/Dockerfile b/vwsfriend/Dockerfile
index 8fe54498..e88cf773 100644
--- a/vwsfriend/Dockerfile
+++ b/vwsfriend/Dockerfile
@@ -1,12 +1,12 @@
 # syntax = docker/dockerfile:experimental
 # Here is the build image
-FROM ubuntu:20.04 as builder
+FROM ubuntu:21.04 as builder
 
 ENV DEBIAN_FRONTEND="noninteractive"
 ENV TZ="Etc/UTC"
 
 RUN apt-get update && apt-get install --no-install-recommends -y python3.9 python3.9-dev python3.9-venv python3-pip python3-wheel build-essential && \
-    apt-get install --no-install-recommends -y libpq-dev libffi-dev libssl-dev cargo libjpeg-dev zlib1g-dev && \
+    apt-get install --no-install-recommends -y libpq-dev libffi-dev libssl-dev rustc cargo libjpeg-dev zlib1g-dev && \
     apt-get clean && rm -rf /var/lib/apt/lists/*
 
 
@@ -15,11 +15,11 @@ RUN python3.9 -m venv /opt/venv
 ENV PATH="/opt/venv/bin:$PATH"
 RUN pip3 install --no-cache-dir wheel
 # This line is a workaround necessary for linux/arm/v7 architecture that has a bug with qemu: https://github.com/rust-lang/cargo/issues/8719
-RUN --security=insecure mkdir -p /root/.cargo && chmod 777 /root/.cargo && mount -t tmpfs none /root/.cargo && pip3 install --no-cache-dir cryptography
+RUN --security=insecure mkdir -p /root/.cargo/registry/index && chmod 777 /root/.cargo/registry/index && mount -t tmpfs none /root/.cargo/registry/index && pip3 install --no-cache-dir cryptography
 RUN pip3 install --no-cache-dir vwsfriend
 
 
-FROM ubuntu:20.04 AS runner-image
+FROM ubuntu:21.04 AS runner-image
 
 ENV WECONNECT_USER=
 ENV WECONNECT_PASSWORD=