diff --git a/project/jsonld.py b/project/jsonld.py
index 03d7913..af8d238 100644
--- a/project/jsonld.py
+++ b/project/jsonld.py
@@ -16,8 +16,9 @@ class CustomJsonProvider(DefaultJSONProvider):
         elif isinstance(obj, datetime.date):
             return obj.isoformat()
 
-        # pragma: no cover
-        return super(CustomJsonProvider, CustomJsonProvider).default(obj)
+        return super(CustomJsonProvider, CustomJsonProvider).default(
+            obj
+        )  # pragma: no cover
 
 
 def get_sd_for_admin_unit(admin_unit):
diff --git a/project/requests.py b/project/requests.py
index 97712fa..adaa48a 100644
--- a/project/requests.py
+++ b/project/requests.py
@@ -33,5 +33,5 @@ def set_response_headers(response):
     response.headers["Referrer-Policy"] = "strict-origin-when-cross-origin"
     response.headers[
         "Content-Security-Policy"
-    ] = "default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline'; style-src 'self' 'unsafe-eval' 'unsafe-inline'; img-src 'self' data: *.openstreetmap.org;"
+    ] = "default-src 'self'; script-src 'self' 'unsafe-eval' 'unsafe-inline'; style-src 'self' 'unsafe-eval' 'unsafe-inline'; img-src 'self' blob: data: *.openstreetmap.org;"
     return response