diff --git a/Tools/scripts/install-prereqs-ubuntu.sh b/Tools/scripts/install-prereqs-ubuntu.sh
index d614dca771..d57e41fb31 100755
--- a/Tools/scripts/install-prereqs-ubuntu.sh
+++ b/Tools/scripts/install-prereqs-ubuntu.sh
@@ -6,7 +6,6 @@ OPT="/opt"
 
 BASE_PKGS="gawk make git arduino-core curl"
 SITL_PKGS="g++ python-pip python-matplotlib python-serial python-wxgtk2.8 python-scipy python-opencv python-numpy python-pyparsing ccache realpath"
-AVR_PKGS="gcc-avr binutils-avr avr-libc"
 PYTHON_PKGS="pymavlink MAVProxy droneapi catkin_pkg"
 PX4_PKGS="python-serial python-argparse openocd flex bison libncurses5-dev \
           autoconf texinfo build-essential libftdi-dev libtool zlib1g-dev \
@@ -59,7 +58,7 @@ sudo usermod -a -G dialout $USER
 
 $APT_GET remove modemmanager
 $APT_GET update
-$APT_GET install $BASE_PKGS $SITL_PKGS $PX4_PKGS $BEBOP_PKGS $UBUNTU64_PKGS $AVR_PKGS
+$APT_GET install $BASE_PKGS $SITL_PKGS $PX4_PKGS $BEBOP_PKGS $UBUNTU64_PKGS
 sudo pip2 -q install $PYTHON_PKGS
 
 if [ ! -d $OPT/$ARM_ROOT ]; then
diff --git a/Tools/scripts/install-travis-env.sh b/Tools/scripts/install-travis-env.sh
index 97441a6f36..9b29fb2afb 100755
--- a/Tools/scripts/install-travis-env.sh
+++ b/Tools/scripts/install-travis-env.sh
@@ -10,7 +10,6 @@ echo "PATH=$PATH"
 
 BASE_PKGS="gawk make git arduino-core curl"
 SITL_PKGS="g++ python-pip python-matplotlib python-serial python-wxgtk2.8 python-scipy python-opencv python-numpy python-pyparsing ccache python-empy"
-AVR_PKGS="gcc-avr binutils-avr avr-libc"
 PYTHON_PKGS="pymavlink MAVProxy catkin_pkg"
 PX4_PKGS="python-serial python-argparse openocd flex bison libncurses5-dev \
           autoconf texinfo build-essential libftdi-dev libtool zlib1g-dev \
@@ -33,7 +32,7 @@ ARDUPILOT_TOOLS="ardupilot/Tools/autotest"
 APT_GET="sudo apt-get -qq --assume-yes"
 
 $APT_GET update
-$APT_GET install $BASE_PKGS $SITL_PKGS $PX4_PKGS $UBUNTU64_PKGS $AVR_PKGS
+$APT_GET install $BASE_PKGS $SITL_PKGS $PX4_PKGS $UBUNTU64_PKGS
 sudo pip install --upgrade pip || {
     echo "pip upgrade failed"
 }
diff --git a/Tools/vagrant/initvagrant.sh b/Tools/vagrant/initvagrant.sh
index 2dcf62917e..e155141a28 100755
--- a/Tools/vagrant/initvagrant.sh
+++ b/Tools/vagrant/initvagrant.sh
@@ -6,7 +6,6 @@ echo "Initial setup of SITL-vagrant instance."
 
 BASE_PKGS="gawk make git arduino-core curl"
 SITL_PKGS="g++ python-pip python-matplotlib python-serial python-wxgtk2.8 python-scipy python-opencv python-numpy python-empy python-pyparsing ccache"
-AVR_PKGS="gcc-avr binutils-avr avr-libc"
 PYTHON_PKGS="pymavlink MAVProxy droneapi"
 PX4_PKGS="python-serial python-argparse openocd flex bison libncurses5-dev \
           autoconf texinfo build-essential libftdi-dev libtool zlib1g-dev \
@@ -27,7 +26,7 @@ sudo usermod -a -G dialout $USER
 sudo apt-get -y remove modemmanager
 sudo apt-get -y update
 sudo apt-get -y install dos2unix g++-4.7 ccache python-lxml screen
-sudo apt-get -y install $BASE_PKGS $SITL_PKGS $PX4_PKGS $UBUNTU64_PKGS $AVR_PKGS
+sudo apt-get -y install $BASE_PKGS $SITL_PKGS $PX4_PKGS $UBUNTU64_PKGS
 sudo pip -q install $PYTHON_PKGS
 sudo pip install catkin_pkg