diff --git a/2021/Lox b/2021/Lox
index de289cd..f1fe261 160000
--- a/2021/Lox
+++ b/2021/Lox
@@ -1 +1 @@
-Subproject commit de289cde2f2b1bf5913f426f56be33a9144e10ac
+Subproject commit f1fe261fb24eee06d43d0b5ac69e895eeb4d3157
diff --git a/2021/chvp b/2021/chvp
index 6b3a1cd..b0cec25 160000
--- a/2021/chvp
+++ b/2021/chvp
@@ -1 +1 @@
-Subproject commit 6b3a1cd16faa7d6ca51aadd48a430a9fd2878e8a
+Subproject commit b0cec25906cf4eeb0df6b4d5cd6872fa7152ba89
diff --git a/2021/jaspervdj b/2021/jaspervdj
index 34eee81..a4762aa 160000
--- a/2021/jaspervdj
+++ b/2021/jaspervdj
@@ -1 +1 @@
-Subproject commit 34eee81838173aedc461ebbc91bc78f8e563fc02
+Subproject commit a4762aab5ff1e6e78a7dd4c8c928d52f4d446188
diff --git a/2021/mraedis b/2021/mraedis
index 3e76dbb..ba230a7 160000
--- a/2021/mraedis
+++ b/2021/mraedis
@@ -1 +1 @@
-Subproject commit 3e76dbb46fd06ac324514aaae10f9b05889ad388
+Subproject commit ba230a712dedb2adf34ec010479a2e979fb36015
diff --git a/2021/ninewise b/2021/ninewise
index c8a4808..e9ee2c7 160000
--- a/2021/ninewise
+++ b/2021/ninewise
@@ -1 +1 @@
-Subproject commit c8a480818f9bb1c05569ee87e50fb83708526913
+Subproject commit e9ee2c7ac742bd57dcd6f14f78cc47df2ceb41eb
diff --git a/2021/redfast00 b/2021/redfast00
index 0189e47..11969ba 160000
--- a/2021/redfast00
+++ b/2021/redfast00
@@ -1 +1 @@
-Subproject commit 0189e472e3eed66d8d2ff177c69ddd12d193d296
+Subproject commit 11969baaa1b7ca24432b0bb7f09edbe5ff8f4126
diff --git a/2021/robbe b/2021/robbe
index 841591c..fdb12ee 160000
--- a/2021/robbe
+++ b/2021/robbe
@@ -1 +1 @@
-Subproject commit 841591c76dd4ba2d442c02a983b7efb2857b441c
+Subproject commit fdb12eedc6e7710d687a56a7f93432bb3e04edc6
diff --git a/2021/silvius b/2021/silvius
index cf2671b..32caad0 160000
--- a/2021/silvius
+++ b/2021/silvius
@@ -1 +1 @@
-Subproject commit cf2671b631c11b80732e04a6f5a08c224060b54b
+Subproject commit 32caad0b9e69aaae7b2bdbacdc08563ed45e85ab