diff --git a/2021/Flynn b/2021/Flynn
index eda8cf4..9345239 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit eda8cf4a292926adb664a13b171a513530998fb8
+Subproject commit 93452395375b96437cc7a11f70ba3e85966fa9a9
diff --git a/2021/Lox b/2021/Lox
index 58e03ec..0bbc639 160000
--- a/2021/Lox
+++ b/2021/Lox
@@ -1 +1 @@
-Subproject commit 58e03ecefd3cc372154587b90cb3f2c757b006d6
+Subproject commit 0bbc63939d4e6f70490f9ef07c28522b13e45fde
diff --git a/2021/Timpy b/2021/Timpy
index 1c1de06..019bbc9 160000
--- a/2021/Timpy
+++ b/2021/Timpy
@@ -1 +1 @@
-Subproject commit 1c1de0675907d0acf61ec40fbc4e15f30b06a326
+Subproject commit 019bbc9156a7c1ce4f3f744849ce96cf976562c6
diff --git a/2021/iasoon b/2021/iasoon
index e617f21..0a07a29 160000
--- a/2021/iasoon
+++ b/2021/iasoon
@@ -1 +1 @@
-Subproject commit e617f21a9cc3f8006079fb6025aa60efc64116c1
+Subproject commit 0a07a29a5308042c8335ce6f2bd5d2f90ea6ae1a
diff --git a/2021/ninewise b/2021/ninewise
index d5ffd52..d99434a 160000
--- a/2021/ninewise
+++ b/2021/ninewise
@@ -1 +1 @@
-Subproject commit d5ffd524b195fa130a5fed7f48182c84e7197b56
+Subproject commit d99434ac43a61d618baf64f1c58b77acbfe94613
diff --git a/2021/robbe b/2021/robbe
index 63ed3ce..75c8c89 160000
--- a/2021/robbe
+++ b/2021/robbe
@@ -1 +1 @@
-Subproject commit 63ed3cebf9ddf54b38126adb949b40855bc50e43
+Subproject commit 75c8c89d082a9373e172e4e3c1ae1ef86072b29a
diff --git a/2021/silvius b/2021/silvius
index 85a7f12..0229368 160000
--- a/2021/silvius
+++ b/2021/silvius
@@ -1 +1 @@
-Subproject commit 85a7f12da794bec9283bd398b9f0531c98679ba4
+Subproject commit 0229368ddbc1f0cc182b02e2f1cdaafc321c08ff