diff --git a/base/nmh:dev b/base/nmh:dev
index 04c9088aa08c8bfe00fbfa463ab13435b6028f78..2386308b9f6376773764bc44b2821294a6ddb4cd 100644
--- a/base/nmh:dev
+++ b/base/nmh:dev
@@ -1,5 +1,6 @@
-FROM docker.km3net.de/jpp-root6-py2:v12.1.2
+FROM docker.km3net.de/jpp-root6-py2:v13.0.0-alpha.1
  MAINTAINER Tamas Gal <tgal@km3net.de>
   
  RUN yum install -y gsl-devel && yum clean -y all
  RUN git clone https://github.com/joaoabcoelho/OscProb /OscProb && source /opt/root-6.14.06/bin/thisroot.sh && cd /OscProb && git checkout v1.1 && make
+