diff --git a/2021/Flynn b/2021/Flynn
index 6984ca9..1256189 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit 6984ca90d140a0608be591eefc2d805ecce7b5c9
+Subproject commit 12561898ccd316c554e6b9825481a71bc35f0e33
diff --git a/2021/beardhatcode b/2021/beardhatcode
index e8340d5..a624b53 160000
--- a/2021/beardhatcode
+++ b/2021/beardhatcode
@@ -1 +1 @@
-Subproject commit e8340d5e6a6791eaa7fd1a6dbbedbf88b2507ac8
+Subproject commit a624b53065c3212d6a5b78efbfb0b1acd898c187
diff --git a/2021/chvp b/2021/chvp
index b0cec25..0d1c33b 160000
--- a/2021/chvp
+++ b/2021/chvp
@@ -1 +1 @@
-Subproject commit b0cec25906cf4eeb0df6b4d5cd6872fa7152ba89
+Subproject commit 0d1c33b4ac73ff4fbfb00a49df47470d30567fb6
diff --git a/2021/jaspervdj b/2021/jaspervdj
index a4762aa..d65c360 160000
--- a/2021/jaspervdj
+++ b/2021/jaspervdj
@@ -1 +1 @@
-Subproject commit a4762aab5ff1e6e78a7dd4c8c928d52f4d446188
+Subproject commit d65c36063a62b48ce234c916369378dde92b1237
diff --git a/2021/mraedis b/2021/mraedis
index ba230a7..4d198f8 160000
--- a/2021/mraedis
+++ b/2021/mraedis
@@ -1 +1 @@
-Subproject commit ba230a712dedb2adf34ec010479a2e979fb36015
+Subproject commit 4d198f8b227ce8f8f2f3fd2fed9396d7898e9d2a
diff --git a/2021/robbe b/2021/robbe
index fdb12ee..df26d0e 160000
--- a/2021/robbe
+++ b/2021/robbe
@@ -1 +1 @@
-Subproject commit fdb12eedc6e7710d687a56a7f93432bb3e04edc6
+Subproject commit df26d0ebac4898ba1cc1fc4d03fc76278e5af07c
diff --git a/2021/silvius b/2021/silvius
index 32caad0..723d43e 160000
--- a/2021/silvius
+++ b/2021/silvius
@@ -1 +1 @@
-Subproject commit 32caad0b9e69aaae7b2bdbacdc08563ed45e85ab
+Subproject commit 723d43ea73a925c4d8282e66c566014ae6590e58