diff --git a/Tools/environment_install/install-prereqs-mac.sh b/Tools/environment_install/install-prereqs-mac.sh
index 906ad0022a..5471e6f175 100755
--- a/Tools/environment_install/install-prereqs-mac.sh
+++ b/Tools/environment_install/install-prereqs-mac.sh
@@ -159,7 +159,7 @@ if [[ $DO_AP_STM_ENV -eq 1 ]]; then
     install_arm_none_eabi_toolchain
 fi
 
-PYTHON_PKGS="future lxml pymavlink MAVProxy pexpect geocoder flake8 empy dronecan"
+PYTHON_PKGS="future lxml pymavlink MAVProxy pexpect geocoder flake8 junitparser empy dronecan"
 # add some Python packages required for commonly-used MAVProxy modules and hex file generation:
 if [[ $SKIP_AP_EXT_ENV -ne 1 ]]; then
     PYTHON_PKGS="$PYTHON_PKGS intelhex gnureadline"
diff --git a/Tools/environment_install/install-prereqs-ubuntu.sh b/Tools/environment_install/install-prereqs-ubuntu.sh
index 65c84f229b..6fa833120a 100755
--- a/Tools/environment_install/install-prereqs-ubuntu.sh
+++ b/Tools/environment_install/install-prereqs-ubuntu.sh
@@ -153,7 +153,7 @@ fi
 # Lists of packages to install
 BASE_PKGS="build-essential ccache g++ gawk git make wget valgrind screen"
 PYTHON_PKGS="future lxml pymavlink pyserial MAVProxy pexpect geocoder empy ptyprocess dronecan"
-PYTHON_PKGS="$PYTHON_PKGS flake8"
+PYTHON_PKGS="$PYTHON_PKGS flake8 junitparser"
 
 # add some Python packages required for commonly-used MAVProxy modules and hex file generation:
 if [[ $SKIP_AP_EXT_ENV -ne 1 ]]; then