diff --git a/package-lock.json b/package-lock.json
index 98be5417c..64b667ffd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -103,6 +103,11 @@
       "integrity": "sha512-jgsaNduz+ndvGyFt3uSuWqvy4lCnIJiovtouQN5JZHOKCS2QuhEdbcQHFhVksz2N2U9hXJo8odG7ETyWlEeuDw==",
       "dev": true
     },
+    "async": {
+      "version": "3.2.0",
+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.0.tgz",
+      "integrity": "sha512-TR2mEZFVOj2pLStYxLht7TyfuRzaydfpxr3k9RpHIzMgw7A64dzsdqCxH1WJyQdoe8T10nDXd9wnEigmiuHIZw=="
+    },
     "async-lock": {
       "version": "1.2.4",
       "resolved": "https://registry.npmjs.org/async-lock/-/async-lock-1.2.4.tgz",
diff --git a/package.json b/package.json
index e26f4aef1..1289d262f 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,7 @@
     "nock": "^12.0.3"
   },
   "dependencies": {
+    "async": "^3.2.0",
     "console-stamp": "^0.2.9",
     "dotenv": "^8.2.0",
     "isomorphic-git": "^1.4.0",
diff --git a/src/history/persistor.js b/src/history/persistor.js
index 51b18a51b..32a0ee508 100644
--- a/src/history/persistor.js
+++ b/src/history/persistor.js
@@ -2,6 +2,13 @@ import path from 'path';
 import fsApi from 'fs';
 const fs = fsApi.promises;
 
+import async from 'async';
+
+const commitQueue = async.queue(_commit, 1);
+commitQueue.error((err, { serviceProviderId, policyType, isSanitized, reject }) => {
+  reject(new Error(`_commit for ${serviceProviderId}${isSanitized ? ' sanitized ' : ' '}document ${policyType} experienced an error: ${err}`));
+});
+
 import * as git from './git.js';
 
 const __dirname = path.dirname(new URL(import.meta.url).pathname);
@@ -28,7 +35,6 @@ export async function save({ serviceProviderId, policyType, fileContent, isSanit
   });
 }
 
-let lock = Promise.resolve('Initial Promise');
 export async function commit({ serviceProviderId, policyType, isSanitized }) {
   const directory = `${isSanitized ? SANITIZED_DIRECTORY : RAW_DIRECTORY}/${serviceProviderId}`;
   const fileExtension = isSanitized ? 'md' : 'html'
@@ -39,17 +45,14 @@ export async function commit({ serviceProviderId, policyType, isSanitized }) {
     return;
   }
 
-  // Ensure asynchronous functions `git.add` and `git.commit` will always be called in sequence…
-  // …and others caller of `persistor.commit` will wait
-  await lock;
-  lock = new Promise(resolveLock => {
-    git.add(filePath).then(() => {
-      git.commit(`${isSanitized ? 'Update sanitized' : 'Update'} ${serviceProviderId} ${policyType} document`).then((sha) => {
-        console.log(`Commit ID for document "${serviceProviderId}/${policyType}.${fileExtension}": ${sha}`);
-        resolveLock(sha);
-      });
-    });
-  });
+  return new Promise((resolve, reject) => {
+    commitQueue.push({ serviceProviderId, policyType, isSanitized, fileExtension, filePath, resolve, reject });
+  })
+}
 
-  return lock;
+async function _commit({ serviceProviderId, policyType, isSanitized, fileExtension, filePath, resolve }) {
+  await git.add(filePath)
+  const sha = await git.commit(`${isSanitized ? 'Update sanitized' : 'Update'} ${serviceProviderId} ${policyType} document`);
+  console.log(`Commit ID for document "${serviceProviderId}/${policyType}.${fileExtension}": ${sha}`);
+  resolve(sha);
 }