diff --git a/2021/Flynn b/2021/Flynn
index 608799c..a50c0e3 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit 608799cc6afe40e1cec5fabaab2ac585fade1dc7
+Subproject commit a50c0e3a673fbd8df4fec38301d75f53456a0a1d
diff --git a/2021/chvp b/2021/chvp
index 02f81ac..ad3ab23 160000
--- a/2021/chvp
+++ b/2021/chvp
@@ -1 +1 @@
-Subproject commit 02f81ac987ba0d00af576a477e78652505acd832
+Subproject commit ad3ab2316d67a7b1c6e818a4760a90a6d87379e2
diff --git a/2021/rien b/2021/rien
index f3d013e..0cba1b0 160000
--- a/2021/rien
+++ b/2021/rien
@@ -1 +1 @@
-Subproject commit f3d013e0f97ebfb72bff89756a5203368c209a1e
+Subproject commit 0cba1b02c4c584d079239345c6d264f80b62c79f