diff --git a/lib/ci/failure_aggregator.js b/lib/ci/failure_aggregator.js
index 5cec214a..eaa429f2 100644
--- a/lib/ci/failure_aggregator.js
+++ b/lib/ci/failure_aggregator.js
@@ -1,4 +1,3 @@
-import _ from 'lodash';
 import chalk from 'chalk';
 
 import { getMachineUrl, parsePRFromURL } from '../links.js';
@@ -15,6 +14,11 @@ import {
 
 const { FAILURE_TYPES_NAME } = CIFailureParser;
 
+function uniqBy(array, key) {
+  const seen = new Set();
+  return array.filter((item) => !seen.has(item[key]) && seen.add(item[key]));
+}
+
 export class FailureAggregator {
   constructor(cli, data) {
     this.cli = cli;
@@ -24,26 +28,19 @@ export class FailureAggregator {
   }
 
   aggregate() {
-    const failures = this.failures;
-    const groupedByReason = _.chain(failures)
-      .groupBy(getHighlight)
-      .toPairs()
-      .sortBy(0)
-      .value();
+    const groupedByReason = Object.groupBy(this.failures, getHighlight);
     const data = [];
-    for (const item of groupedByReason) {
-      const [reason, failures] = item;
+    for (const reason of Object.keys(groupedByReason).sort()) {
+      const failures = groupedByReason[reason];
       // Uncomment this and redirect stderr away to see matched highlights
       // console.log('HIGHLIGHT', reason);
 
       // If multiple sub builds of one PR are failed by the same reason,
       // we'll only take one of those builds, as that might be a genuine failure
-      const prs = _.chain(failures)
-        .uniqBy('source')
-        .sortBy((f) => parseJobFromURL(f.upstream).jobid)
-        .map((item) => ({ source: item.source, upstream: item.upstream }))
-        .value();
-      const machines = _.uniqBy(
+      const prs = uniqBy(failures, 'source')
+        .map(({ source, upstream }) => ({ source, upstream, _id: parseJobFromURL(upstream).jobid }))
+        .sort((a, b) => a._id - b._id);
+      const machines = uniqBy(
         failures.map(f => ({ hostname: f.builtOn, url: f.url })),
         'hostname');
       data.push({
@@ -51,10 +48,9 @@ export class FailureAggregator {
       });
     }
 
-    const groupedByType = _.groupBy(data, 'type');
-    for (const type of Object.keys(groupedByType)) {
-      groupedByType[type] =
-        _.sortBy(groupedByType[type], r => 0 - (r.prs.length));
+    const groupedByType = Object.groupBy(data, ({ type }) => type);
+    for (const group of Object.value(groupedByType)) {
+      group.sort((a, b) => b.prs.length - a.prs.length);
     }
     this.aggregates = groupedByType;
     return groupedByType;
diff --git a/package-lock.json b/package-lock.json
index c6e75218..49b18152 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -22,7 +22,6 @@
         "git-secure-tag",
         "js-yaml",
         "listr2",
-        "lodash",
         "ora",
         "replace-in-file",
         "semver",
@@ -47,7 +46,6 @@
         "git-secure-tag": "^2.3.1",
         "js-yaml": "^5.2.1",
         "listr2": "^9.0.5",
-        "lodash": "^4.17.21",
         "ora": "^9.0.0",
         "replace-in-file": "^8.3.0",
         "semver": "^7.7.1",
diff --git a/package.json b/package.json
index fe6c1185..740c36cb 100644
--- a/package.json
+++ b/package.json
@@ -48,7 +48,6 @@
     "git-secure-tag": "^2.3.1",
     "js-yaml": "^5.2.1",
     "listr2": "^9.0.5",
-    "lodash": "^4.17.21",
     "ora": "^9.0.0",
     "replace-in-file": "^8.3.0",
     "semver": "^7.7.1",