diff --git a/tests/docker/images/clazy-fedora-31/Dockerfile b/tests/docker/images/clazy-fedora-31/Dockerfile
index 54caa48..22c2a2a 100644
--- a/tests/docker/images/clazy-fedora-31/Dockerfile
+++ b/tests/docker/images/clazy-fedora-31/Dockerfile
@@ -1,12 +1,12 @@
 # This Dockerfile creates the container for testing on Fedora
 # You can run, for example: clazy/tests/docker/test_docker.py -b 1.6 , which will run the tests in all containers
 # Or explicitly: docker run -i -t iamsergio/clazy-fedora-31 sh /root/clazy/tests/docker/build-clazy.sh 1.6 -j12 none /usr
 
 FROM fedora:31
 MAINTAINER Sergio Martins (sergio.martins@kdab.com)
 
 RUN yum -y update
-RUN yum -y install make cmake git ninja-build gcc llvm-devel clang-devel qt5-qtbase-devel qt5-qtdeclarative-devel
+RUN yum -y install make cmake git ninja-build gcc llvm-devel clang-devel qt5-qtbase-devel qt5-qtdeclarative-devel diffutils
 
 WORKDIR /root
 RUN git clone https://github.com/KDE/clazy.git