diff --git a/kitsune/settings.py b/kitsune/settings.py
index 0d6bf5612df..9b78d6c077a 100644
--- a/kitsune/settings.py
+++ b/kitsune/settings.py
@@ -1200,6 +1200,7 @@ def filter_exceptions(event, hint):
 
 CSP_IMG_SRC = (
     "'self'",
+    "blob:",
     "data:",
     "https://*.mozaws.net",
     "https://*.webservices.mozgcp.net",