diff --git a/basis/Dockerfile b/basis/Dockerfile
index 6c359e434cf850a016973953b9391079db750e33..2c5b4c4bb15a3a3b761de3223d65d590de920a03 100755
--- a/basis/Dockerfile
+++ b/basis/Dockerfile
@@ -25,7 +25,7 @@ RUN apt-get update -y && apt-get upgrade -y && \
 
 ### installing pip packages
 RUN pip install numpy seaborn scipy matplotlib uncertainties pyunfold PhyPraKit pandas\
-    kafe2 pydot graphviz scikit-learn jupytext nbgitpuller jupyterlab-git ipympl pyarrow ipywidget --upgrade --no-cache-dir
+    kafe2 pydot graphviz scikit-learn jupytext nbgitpuller jupyterlab-git ipympl pyarrow ipywidgets --upgrade --no-cache-dir
 
 RUN pip install iminuit --no-cache