diff --git a/2021/Flynn b/2021/Flynn
index 1460c35..83be17a 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit 1460c35eb139a88671622e25c538483971464378
+Subproject commit 83be17aba7aed11b4989ad500c82b11fa16e8401
diff --git a/2021/Lox b/2021/Lox
index f33af76..d0b43e4 160000
--- a/2021/Lox
+++ b/2021/Lox
@@ -1 +1 @@
-Subproject commit f33af76ae1a006e29898a662a27d0561724b59fd
+Subproject commit d0b43e4d6042488c2508634c0d8096e5ec38a8ed
diff --git a/2021/beardhatcode b/2021/beardhatcode
index 9d8fcd6..e8340d5 160000
--- a/2021/beardhatcode
+++ b/2021/beardhatcode
@@ -1 +1 @@
-Subproject commit 9d8fcd63559b3745d4b198c66697eaa3022cc7b4
+Subproject commit e8340d5e6a6791eaa7fd1a6dbbedbf88b2507ac8
diff --git a/2021/jaspervdj b/2021/jaspervdj
index 2fbe01d..1664856 160000
--- a/2021/jaspervdj
+++ b/2021/jaspervdj
@@ -1 +1 @@
-Subproject commit 2fbe01de60d7a83aa1e4360a9141736df6f80946
+Subproject commit 16648567fd769ef1dfcacc35d303c7a10ec60a80
diff --git a/2021/redfast00 b/2021/redfast00
index abe8f1a..4ac5c89 160000
--- a/2021/redfast00
+++ b/2021/redfast00
@@ -1 +1 @@
-Subproject commit abe8f1ab17fbb5c90b9a8382f7529e3ed32b66a0
+Subproject commit 4ac5c89a5c0f45e0b352bf8f72225f0bf2b57efe
diff --git a/2021/rien b/2021/rien
index 1e0c70c..aed47c7 160000
--- a/2021/rien
+++ b/2021/rien
@@ -1 +1 @@
-Subproject commit 1e0c70c08291c39b9efa9cd9b1652b7f98ca768e
+Subproject commit aed47c72cb8d78fc2740d1f40c4aa147ba2b92bd
diff --git a/2021/robbe b/2021/robbe
index 9b0edfe..bdd20ab 160000
--- a/2021/robbe
+++ b/2021/robbe
@@ -1 +1 @@
-Subproject commit 9b0edfe50ff26c4cc24ce7570858cbda62a9eb19
+Subproject commit bdd20ab99dac9b2bcccc9cec2479ef2a2620e8eb