diff --git a/nixos/modules/tasks/filesystems.nix b/nixos/modules/tasks/filesystems.nix
index 3951d617f6f..1922d2924bc 100644
--- a/nixos/modules/tasks/filesystems.nix
+++ b/nixos/modules/tasks/filesystems.nix
@@ -294,7 +294,7 @@ in
       "/run" = { fsType = "tmpfs"; options = [ "nosuid" "nodev" "strictatime" "mode=755" "size=${config.boot.runSize}" ]; };
       "/dev" = { fsType = "devtmpfs"; options = [ "nosuid" "strictatime" "mode=755" "size=${config.boot.devSize}" ]; };
       "/dev/shm" = { fsType = "tmpfs"; options = [ "nosuid" "nodev" "strictatime" "mode=1777" "size=${config.boot.devShmSize}" ]; };
-      "/dev/pts" = { fsType = "devpts"; options = [ "nosuid" "noexec" "mode=620" "gid=${toString config.ids.gids.tty}" ]; };
+      "/dev/pts" = { fsType = "devpts"; options = [ "nosuid" "noexec" "mode=620" "ptmxmode=0666" "gid=${toString config.ids.gids.tty}" ]; };
 
       # To hold secrets that shouldn't be written to disk (generally used for NixOps, harmless elsewhere)
       "/run/keys" = { fsType = "ramfs"; options = [ "nosuid" "nodev" "mode=750" "gid=${toString config.ids.gids.keys}" ]; };