diff --git a/CI/ubuntu1604.Dockerfile b/CI/ubuntu1604.Dockerfile
index 23638cc0cc..bfb70675a4 100644
--- a/CI/ubuntu1604.Dockerfile
+++ b/CI/ubuntu1604.Dockerfile
@@ -12,7 +12,7 @@ RUN \
   sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
   apt-get update && \
   apt-get install -y git cmake qtbase5-dev build-essential libx11-dev libxtst-dev libgl1-mesa-dev libssl-dev libavahi-compat-libdnssd-dev debhelper devscripts && \
-  sudo apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
+  apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
   rm -rf /var/lib/apt/lists/*
   
 # Set environment variables.
diff --git a/CI/ubuntu1804.Dockerfile b/CI/ubuntu1804.Dockerfile
index 6500e3e13e..e44cb9a200 100644
--- a/CI/ubuntu1804.Dockerfile
+++ b/CI/ubuntu1804.Dockerfile
@@ -12,7 +12,7 @@ RUN \
   sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
   apt-get update && \
   apt-get install -y git cmake qtbase5-dev build-essential libx11-dev libxtst-dev libgl1-mesa-dev libssl-dev libavahi-compat-libdnssd-dev debhelper devscripts && \
-  sudo apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
+  apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
   rm -rf /var/lib/apt/lists/*
 
 
diff --git a/CI/ubuntu1904.Dockerfile b/CI/ubuntu1904.Dockerfile
index ef24732424..83226ae40f 100644
--- a/CI/ubuntu1904.Dockerfile
+++ b/CI/ubuntu1904.Dockerfile
@@ -12,7 +12,7 @@ RUN \
   sed -i 's/# \(.*multiverse$\)/\1/g' /etc/apt/sources.list && \
   apt-get update && \
   apt-get install -y git cmake qtbase5-dev build-essential libx11-dev libxtst-dev libgl1-mesa-dev libssl-dev libavahi-compat-libdnssd-dev debhelper devscripts && \
-  sudo apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
+  apt-get -y install qttools5-dev qttools5-dev-tools --no-install-recommends && \
   rm -rf /var/lib/apt/lists/*
   
 # Set environment variables.