diff --git a/sync.sh b/sync.sh
index 290d8db4..2e06d950 100755
--- a/sync.sh
+++ b/sync.sh
@@ -1,16 +1,28 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -euo pipefail
 
-CURL_OPTS=(-fSL)
+# Resolve paths relative to the repository root, so the script can be run from
+# any working directory.
+cd "$(dirname "${BASH_SOURCE[0]}")"
+
+defaultBaseUrl="https://fingerprintjs.github.io/openapi"
+schemaUrl="${1:-$defaultBaseUrl/schemas/fingerprint-server-api-v4.yaml}"
+examplesBaseUrl="${2:-$defaultBaseUrl/examples}"
+
+CURL_OPTS=(-fSL --retry 3 --proto-redir '=https' --connect-timeout 10 --max-time 300)
 if [[ "${TRACE:-}" != "true" && "${ACTIONS_STEP_DEBUG:-}" != "true" ]]; then
   CURL_OPTS+=(-s)
 fi
 
-mkdir -p ./resources
-curl "${CURL_OPTS[@]}" -o ./resources/fingerprint-server-api.yaml \
-  https://fingerprintjs.github.io/fingerprint-pro-server-api-openapi/schemas/fingerprint-server-api-v4.yaml
+schemaDestination="./resources/fingerprint-server-api.yaml"
+exampleBaseDestination="./tests/mocked-responses-tests/mocked-responses-data"
+
+mkdir -p "$(dirname "$schemaDestination")"
 
-examplesList=(
+echo "Downloading $schemaUrl to $schemaDestination"
+curl "${CURL_OPTS[@]}" -o "$schemaDestination" "$schemaUrl"
+
+examples=(
   'webhook/webhook_event.json'
   'events/get_event_200.json'
   'events/get_event_ruleset_200.json'
@@ -24,16 +36,13 @@ examplesList=(
   'errors/409_state_not_ready.json'
 )
 
-baseDestination="./tests/mocked-responses-tests/mocked-responses-data"
-
-for example in "${examplesList[@]}"; do
-  destinationPath="$baseDestination/$example"
-  destinationDir="$(dirname "$destinationPath")"
-
-  mkdir -p "$destinationDir"
+for example in "${examples[@]}"; do
+  destinationPath="$exampleBaseDestination/$example"
+  mkdir -p "$(dirname "$destinationPath")"
 
-  echo "Downloading $example to $destinationPath"
-  curl "${CURL_OPTS[@]}" -o "$destinationPath" "https://fingerprintjs.github.io/fingerprint-pro-server-api-openapi/examples/$example"
+  exampleUrl="$examplesBaseUrl/$example"
+  echo "Downloading $exampleUrl to $destinationPath"
+  curl "${CURL_OPTS[@]}" -o "$destinationPath" "$exampleUrl"
 done
 
-echo "All OpenAPI documentation downloads complete."
+echo "All OpenAPI schema downloads complete."