diff --git a/2021/Flynn b/2021/Flynn
index a1127a0..2e504cd 160000
--- a/2021/Flynn
+++ b/2021/Flynn
@@ -1 +1 @@
-Subproject commit a1127a01f8f2441f284c6aebf712cbf955c4fa71
+Subproject commit 2e504cdc7d659c53b130b4922e06cbe0f5ad2569
diff --git a/2021/rien b/2021/rien
index 217b571..f10a209 160000
--- a/2021/rien
+++ b/2021/rien
@@ -1 +1 @@
-Subproject commit 217b571949fe1d8e9df875d07ffc8d7f4ed0feb7
+Subproject commit f10a209e6300ebb542491eb4962dc786d7f27db5