diff --git a/puppet/zulip/files/nginx/zulip-include-frontend/uploads.types b/puppet/zulip/files/nginx/zulip-include-frontend/uploads.types
index 20ba343269..c6a39a64b1 100644
--- a/puppet/zulip/files/nginx/zulip-include-frontend/uploads.types
+++ b/puppet/zulip/files/nginx/zulip-include-frontend/uploads.types
@@ -2,6 +2,8 @@
 types {
     text/plain                            txt;
 
+    application/pdf                       pdf;
+
     image/gif                             gif;
     image/jpeg                            jpeg jpg;
     image/png                             png;