diff --git a/nixos/server/package-configs/forgejo/default.nix b/nixos/server/package-configs/forgejo/default.nix
index a0c278e..f89ec7f 100644
--- a/nixos/server/package-configs/forgejo/default.nix
+++ b/nixos/server/package-configs/forgejo/default.nix
@@ -76,6 +76,9 @@
         ALLOW_ATTR = "class";
         REGEXP = "";
       };
+      "markup.sanitizer.jupyter.img" = {
+        ALLOW_DATA_URI_IMAGES = true;
+      };
     };
   };