diff --git a/.eslintrc.js b/.eslintrc.js
index 6f289406fca5..9621108d80c0 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -45,7 +45,6 @@ module.exports = {
   "overrides": [{
       "files": [
         "devtools/**",
-        "startupcache/**",
         "storage/**",
         "taskcluster/**",
         "testing/**",
diff --git a/.prettierignore b/.prettierignore
index ec8324b23f20..899454b6c014 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -40,7 +40,6 @@ toolkit/components/telemetry/datareporting-prefs.js
 toolkit/components/telemetry/healthreport-prefs.js
 
 # Ignore all top-level directories for now.
-startupcache/**
 storage/**
 taskcluster/**
 testing/**