diff --git a/2021/chvp b/2021/chvp
index 06c0c36..e92b69f 160000
--- a/2021/chvp
+++ b/2021/chvp
@@ -1 +1 @@
-Subproject commit 06c0c366b7807ab5b9ce0282ebd2df453eb06b7d
+Subproject commit e92b69f83652210a614d42a630b72754484295ca
diff --git a/2021/jaspervdj b/2021/jaspervdj
index 104b5f9..a4068f6 160000
--- a/2021/jaspervdj
+++ b/2021/jaspervdj
@@ -1 +1 @@
-Subproject commit 104b5f947b7f6b5b3a26d3ccb38cfe6ceec7ddda
+Subproject commit a4068f6b7098efe701ed8cff337b432ba85c49a6
diff --git a/2021/ninewise b/2021/ninewise
index f4227e4..fadc49c 160000
--- a/2021/ninewise
+++ b/2021/ninewise
@@ -1 +1 @@
-Subproject commit f4227e42ecc28ee211925f7dd1707dbed3ac8927
+Subproject commit fadc49c09d2d229aeb609fdd9f0516ec81acb96b
diff --git a/2021/silvius b/2021/silvius
index fb3048a..77a8e2f 160000
--- a/2021/silvius
+++ b/2021/silvius
@@ -1 +1 @@
-Subproject commit fb3048affa6ed5695db869ddada2c19e7418bad7
+Subproject commit 77a8e2fd998f1a2b0a2c3b12f643076326749a7c