diff --git a/Dockerfile.ubuntu-with-tests b/Dockerfile.ubuntu-with-tests
index 19596ab..ffb9cc4 100755
--- a/Dockerfile.ubuntu-with-tests
+++ b/Dockerfile.ubuntu-with-tests
@@ -1,5 +1,7 @@
 FROM ubuntu:18.04
 
+ENV DEBIAN_FRONTEND=noninteractive
+
 RUN apt-get update && \
     apt-get install -y \
         autoconf \
@@ -22,7 +24,6 @@ RUN apt-get update && \
         python-pandas \
         python-distribute \
         python-pysam \
-        python-software-properties \
         python-scipy \                    
         software-properties-common \
         wget \