diff --git a/2021/benchmark b/2021/benchmark
index 83cb4af..2064a02 100755
--- a/2021/benchmark
+++ b/2021/benchmark
@@ -1,7 +1,7 @@
 #!/bin/sh
 day="$(printf '%02d' "$1")"
 part="$2"
-inputfile="../inputs/$day-input"
+inputfile="../inputs/$day.txt"
 
 [ -x "prepare" ] || exit 0
 
diff --git a/2021/rien b/2021/rien
index 14f71ed..217b571 160000
--- a/2021/rien
+++ b/2021/rien
@@ -1 +1 @@
-Subproject commit 14f71edc265fbfc16ea92d98662e79961c15aabb
+Subproject commit 217b571949fe1d8e9df875d07ffc8d7f4ed0feb7