diff --git a/introduction b/introduction
index c39da922..e04c1a15 160000
--- a/introduction
+++ b/introduction
@@ -1 +1 @@
-Subproject commit c39da92283f9ca6ed3e5ec66e75373843559c05a
+Subproject commit e04c1a15792b8aea9a342c6e247649c2eb7ee512
diff --git a/upload b/upload
index fc99bf77..be486bfb 160000
--- a/upload
+++ b/upload
@@ -1 +1 @@
-Subproject commit fc99bf77830d200175b99482249a341d96dbe011
+Subproject commit be486bfbf8fd9ed4350fb8fff014ea182c371d26