diff --git a/files/home_hpf_ans_bin_ansible_pull_sh b/files/home_hpf_ans_bin_ansible_pull_sh
index c7787bb..2c2d3a1 100644
--- a/files/home_hpf_ans_bin_ansible_pull_sh
+++ b/files/home_hpf_ans_bin_ansible_pull_sh
@@ -1,14 +1,24 @@
 #!/bin/bash
 
-source ~/.ansible-venv/bin/activate
+# - Fix branch to check out
+
+. "${HOME}/.ansible-venv/bin/activate"
 
 GIT_REPO_BASE="https://gitea.admin-a.hpetersenfamily.com/heath/ansible"
 GIT_REPO="${GIT_REPO_BASE}.git"
+LOG_FILE="/var/log/ansible-pull.sh.log"
+LOCK_FILE="/tmp/ansible-pull.sh.lock"
 
-ANSIBLE_PULL_LOG="/var/log/ansible-pull.log"
+# - Redirect all further output to the log file and create a lock file
+exec >>"${LOG_FILE}" 2>&1 9>"${LOCK_FILE}"
 
-echo								| sudo tee -a "${ANSIBLE_PULL_LOG}"
-echo -n "$(basename "${0}"): "					| sudo tee -a "${ANSIBLE_PULL_LOG}"
-date "+%Y-%m-%d %H:%M:%S"					| sudo tee -a "${ANSIBLE_PULL_LOG}"
-ansible-pull --only-if-changed --url "${GIT_REPO}" "${@}" 2>&1	| sudo tee -a "${ANSIBLE_PULL_LOG}"
+# - Log that we've gotten this far
+echo
+echo "$(basename "${0}"): $(date "+%Y-%m-%d %H:%M:%S")"
+echo "----------"
 
+# - If we can't lock the lock file, don't proceed
+if ! flock -n 9; then echo "ERROR - Another copy of ansible-pull.sh is already running! Exiting..." ; exit 1 ; fi
+
+# - Do our work
+ansible-pull --only-if-changed --url "${GIT_REPO}" --checkout main "${@}"