diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index d358fe37106..95331ff8482 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21731,7 +21731,7 @@ with pkgs;
   unixtools = recurseIntoAttrs (callPackages ./unix-tools.nix { });
   inherit (unixtools) hexdump ps logger eject umount
                       mount wall hostname more sysctl getconf
-                      getent locale;
+                      getent locale killall;
 
   fts = if hostPlatform.isMusl then netbsd.fts else null;
 
diff --git a/pkgs/top-level/unix-tools.nix b/pkgs/top-level/unix-tools.nix
index c1bd46ad68d..a46d2897f4e 100644
--- a/pkgs/top-level/unix-tools.nix
+++ b/pkgs/top-level/unix-tools.nix
@@ -81,6 +81,10 @@ let
       linux = pkgs.nettools;
       darwin = pkgs.darwin.network_cmds;
     };
+    killall = {
+      linux = pkgs.psmisc;
+      darwin = pkgs.darwin.shell_cmds;
+    };
     locale = {
       linux = pkgs.glibc;
       darwin = pkgs.netbsd.locale;