diff --git a/.nbhosting/Dockerfile b/.nbhosting/Dockerfile
index 15be280a..294c31c9 100644
--- a/.nbhosting/Dockerfile
+++ b/.nbhosting/Dockerfile
@@ -16,8 +16,8 @@ RUN true \
  && pip install autograd \
     # Fourier \
  && pip install k3d \
- && jupyter nbextension install --py --sys-prefix k3d \
- && jupyter nbextension enable  --py --sys-prefix k3d \
+ && jupyter nbextension install --py k3d \
+ && jupyter nbextension enable  --py k3d \
     # section on pandas \
  && pip install seaborn \
     # w8 \