diff --git a/src/tools/scripts/deploy.sh b/src/tools/scripts/deploy.sh
index def95324b3e..4d3610a4369 100755
--- a/src/tools/scripts/deploy.sh
+++ b/src/tools/scripts/deploy.sh
@@ -64,6 +64,11 @@ function check_continue {
   fi
 }
 
+if [ ! "$(which pgrep)" ]; then
+  echo "Need pgrep installed. Try 'brew install proctools'"
+  exit 1
+fi
+
 echo "Beginning the Web Almanac deployment process"
 
 # This script must be run from src directory
@@ -95,7 +100,7 @@ git status
 git pull
 git pull origin main
 
-if [ "$(pgrep -f 'python main.py')" ]; then
+if [ "$(pgrep -if 'python main.py')" ]; then
   echo "Killing existing server to run a fresh version"
   pkill -9 python main.py
 fi
@@ -192,7 +197,7 @@ git status
 echo "Checking out main branch"
 git checkout main
 
-if [ "$(pgrep -f 'python main.py')" ]; then
+if [ "$(pgrep -if 'python main.py')" ]; then
   echo "Killing server so backgrounded version isn't left there"
   pkill -9 -f "python main.py"
 fi
diff --git a/src/tools/scripts/run_and_test_website.sh b/src/tools/scripts/run_and_test_website.sh
index ec05f22f9d8..85c33f7592b 100755
--- a/src/tools/scripts/run_and_test_website.sh
+++ b/src/tools/scripts/run_and_test_website.sh
@@ -46,12 +46,17 @@ if [ -d "src" ]; then
   cd src
 fi
 
-if [ "$(pgrep -f 'python main.py')" ]; then
+if [ ! "$(which pgrep)" ]; then
+  echo "Need pgrep installed. Try 'brew install proctools'"
+  exit 1
+fi
+
+if [ "$(pgrep -if 'python main.py')" ]; then
   echo "Killing existing server to run a fresh version"
   pkill -9 -f "python main.py"
 fi
 
-if [ "$(pgrep -f 'node ./tools/generate/chapter_watcher')" ]; then
+if [ "$(pgrep -if 'node ./tools/generate/chapter_watcher')" ]; then
   echo "Killing existing watcher to run a fresh version"
   pkill -9 -f "node ./tools/generate/chapter_watcher"
 fi
@@ -65,7 +70,7 @@ python main.py background &
 # Sleep for a couple of seconds to make sure server is up
 sleep 2
 # Check website is running as won't have got feedback as backgrounded
-pgrep -f "python main.py"
+pgrep -if "python main.py"
 
 echo "Installing node modules"
 npm install
@@ -98,7 +103,7 @@ if [ "${debug}" == "1" ]; then
   echo "Monitoring templates for changes"
   npm run watch &
 
-  if [ "$(pgrep -f 'python main.py')" ]; then
+  if [ "$(pgrep -if 'python main.py')" ]; then
     echo "Killing server to run a fresh version in debug mode"
     pkill -9 -f "python main.py"
   fi