diff --git a/misc/python3/ratchet.sh b/misc/python3/ratchet.sh
index 9d57a0e10..3d824d199 100755
--- a/misc/python3/ratchet.sh
+++ b/misc/python3/ratchet.sh
@@ -33,7 +33,7 @@ if [ $TERM = 'dumb' ]; then
   export TERM=ansi
 fi
 
-apt-get install -y strace
+sudo apt-get install -y strace
 echo "The ${tracking_filename} diff is:"
 echo "================================="
 export GIT_TRACE=1