diff --git a/lib/services/fetch_sources_list.dart b/lib/services/fetch_sources_list.dart
index bbc5a0b..0c49106 100644
--- a/lib/services/fetch_sources_list.dart
+++ b/lib/services/fetch_sources_list.dart
@@ -149,6 +149,21 @@ void checkIfSourceIsObsolete(List<Source> sourceList, bool isManga) {
       }
     }
   }
+  removeNsfwObsoleteSources();
+}
+
+void removeNsfwObsoleteSources() {
+  final ids = isar.sources
+      .filter()
+      .idIsNotNull()
+      .isNsfwEqualTo(true)
+      .isObsoleteEqualTo(true)
+      .findAllSync()
+      .map((e) => e.id!)
+      .toList();
+  isar.writeTxnSync(() {
+    isar.sources.deleteAllSync(ids);
+  });
 }
 
 int compareVersions(String version1, String version2) {