diff --git a/bin/install_tool b/bin/install_tool
index 1d47c46..f69b461 100755
--- a/bin/install_tool
+++ b/bin/install_tool
@@ -5,6 +5,8 @@ set -ue
 REINSTALL=0
 PACKAGES=1
 
+export GO111MODULE=on
+
 while getopts -- "-:" a ; do
   # shellcheck disable=SC2154
   case "${a}" in
@@ -268,7 +270,7 @@ case ${TOOL} in
     ;;
   aflplusplus)
     install_pkgs libtool-bin libglib2.0-dev libpixman-1-dev clang clang-tools \
-      llvm
+      llvm python3-setuptools
     git clone "https://github.com/vanhauser-thc/AFLplusplus" "${DESTDIR}"
     make -C "${DESTDIR}" distrib
     ;;
@@ -364,7 +366,7 @@ EOF
     go get -u github.com/OJ/gobuster
     ;;
   amass)
-    go get -u github.com/OWASP/Amass/cmd/amass
+    go get -u github.com/OWASP/Amass/v3/...
     ;;
   cht.sh)
     install_pkgs rlwrap