diff --git a/devtools/client/aboutdebugging-new/index.html b/devtools/client/aboutdebugging-new/index.html
index faf6d16a8830..ce1f1496ac93 100644
--- a/devtools/client/aboutdebugging-new/index.html
+++ b/devtools/client/aboutdebugging-new/index.html
@@ -7,7 +7,7 @@
     <meta charset="utf-8" />
     <title>Debugging</title>
     <meta http-equiv="Content-Security-Policy"
-      content="default-src chrome: resource:; img-src data: chrome: resource:" />
+      content="default-src chrome: resource:; img-src data: chrome: resource: https:" />
     <link rel="icon" type="image/png" href="chrome://browser/skin/developer.svg">
     <link rel="stylesheet" href="chrome://devtools/content/aboutdebugging-new/aboutdebugging.css"/>
     <script src="resource://devtools/client/aboutdebugging-new/initializer.js"></script>