diff --git a/krebs/4lib/infest/prepare.sh b/krebs/4lib/infest/prepare.sh
index 92e32a905..a16903db4 100644
--- a/krebs/4lib/infest/prepare.sh
+++ b/krebs/4lib/infest/prepare.sh
@@ -1,8 +1,8 @@
 #! /bin/sh
 set -efu
 
-nix_url=https://nixos.org/releases/nix/nix-1.10/nix-1.10-x86_64-linux.tar.bz2
-nix_sha256=504f7a3a85fceffb8766ae5e1005de9e02e489742f5a63cc3e7552120b138bf4
+nix_url=https://nixos.org/releases/nix/nix-1.11.13/nix-1.11.13-x86_64-linux.tar.bz2
+nix_sha256=c11411d52d8ad1ce3a68410015487282fd4651d3abefbbb13fa1f7803a2f60de
 
 prepare() {(
   if test -e /etc/os-release; then