diff --git a/src/jirorian/r2.py b/src/jirorian/r2.py
index b586259..ce1e399 100644
--- a/src/jirorian/r2.py
+++ b/src/jirorian/r2.py
@@ -9,6 +9,7 @@ ALLOWED_CONTENT_TYPES: dict[str, str] = {
     "image/png":  "png",
     "image/webp": "webp",
     "image/gif":  "gif",
+    "application/pdf": "pdf",
 }
 
 MAX_FILE_SIZE = int(os.environ.get("JIRORIAN_MAX_FILE_SIZE", str(10 * 1024 * 1024)))