diff --git a/2021/Flynn b/2021/Flynn
index a3d1b72..94b8a66 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit a3d1b729e70fe8e9014dba49487372c1da809318
+Subproject commit 94b8a6668a24b0475390998bdf8f30111055dea3
diff --git a/2021/Lox b/2021/Lox
index d1a9236..1f1945f 160000
--- a/2021/Lox
+++ b/2021/Lox
@@ -1 +1 @@
-Subproject commit d1a9236d7121c9694ef5313d3ae3a9e6e32d67d0
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diff --git a/2021/Timpy b/2021/Timpy
index 66b6cb5..ac2b55b 160000
--- a/2021/Timpy
+++ b/2021/Timpy
@@ -1 +1 @@
-Subproject commit 66b6cb5702df0ee249132de32ab6c5678a21fb99
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diff --git a/2021/chvp b/2021/chvp
index ad45f3d..f591217 160000
--- a/2021/chvp
+++ b/2021/chvp
@@ -1 +1 @@
-Subproject commit ad45f3d95f15e035f0d1b7075925db1185d7de47
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diff --git a/2021/jaspervdj b/2021/jaspervdj
index 08fda63..8a7ce36 160000
--- a/2021/jaspervdj
+++ b/2021/jaspervdj
@@ -1 +1 @@
-Subproject commit 08fda63ffc4c79942686bc671c83d3273b7b76a4
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diff --git a/2021/ninewise b/2021/ninewise
index 6005fb0..9efab87 160000
--- a/2021/ninewise
+++ b/2021/ninewise
@@ -1 +1 @@
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diff --git a/2021/robbe b/2021/robbe
index 05981b8..bf927a2 160000
--- a/2021/robbe
+++ b/2021/robbe
@@ -1 +1 @@
-Subproject commit 05981b880696de8307d1e4c87a05a3c40f181f01
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diff --git a/2021/silvius b/2021/silvius
index 4830e8e..a53d50c 160000
--- a/2021/silvius
+++ b/2021/silvius
@@ -1 +1 @@
-Subproject commit 4830e8e3939b8a7b289f6129ca870dcfc4dec4df
+Subproject commit a53d50cb141f0e310a58433e7a500e431b676143