diff --git a/Dockerfile b/0.20.3/Dockerfile
similarity index 100%
rename from Dockerfile
rename to 0.20.3/Dockerfile
diff --git a/1.3.3/Dockerfile b/1.3.3/Dockerfile
new file mode 100644
index 0000000..67ef067
--- /dev/null
+++ b/1.3.3/Dockerfile
@@ -0,0 +1,7 @@
+FROM python:3.9.7-slim
+
+WORKDIR /usr/src/app
+
+RUN pip install --no-cache-dir -v pandas==1.3.3
+
+CMD [ "python" ]
diff --git a/README.md b/README.md
index 2e9359f..c40bf51 100644
--- a/README.md
+++ b/README.md
@@ -1,21 +1,32 @@
 # Docker container for Pandas
 
-[pandas](http://pandas.pydata.org/) is an open source library providing data analysis tools for the Python programming language. This docker image contains pandas 0.20.3 and is build on top of the official python 3.6.3 slim image.
+[pandas](http://pandas.pydata.org/) is an open source library providing data analysis tools for the Python programming language. This docker image contains pandas and is build on top of the official python slim image.
 
 * [GitHub Repository with Dockerbuild files](https://github.com/felixlohmeier/pandas-docker)
 * [Docker Hub with docker images](https://hub.docker.com/r/felixlohmeier/pandas/)
 
-## fixed versions
+## Available Tags
 
-* Python 3.6.3
-* Pandas 0.20.3
+* 1.3.3: Pandas 1.3.3, Python 3.9.7
+* 0.20.3: Pandas 0.20.3, Python 3.6.3
 
-## usage
+## Usage
 
-### python console
+### Python console
 
-> docker run -it --rm felixlohmeier/pandas
+> docker run -it --rm felixlohmeier/pandas:1.3.3
 
-### run a script
+### Run a script
 
-> docker run --rm -v "$PWD":/data:z -w /data felixlohmeier/pandas python my-script.py
+> docker run --rm -v "$PWD":/data:z -w /data felixlohmeier/pandas:1.3.3 python my-script.py
+
+## Development
+
+```
+cd 1.3.3
+docker build -t felixlohmeier/pandas:1.3.3 .
+docker login --username felixlohmeier --password X docker.io
+docker push felixlohmeier/pandas:1.3.3
+```
+
+Manually update README in [Docker Hub Repo](https://hub.docker.com/repository/docker/felixlohmeier/pandas)