diff --git a/pkgs/tools/networking/lsh/default.nix b/pkgs/tools/networking/lsh/default.nix
index 087aeddf4970..a727c46424b0 100644
--- a/pkgs/tools/networking/lsh/default.nix
+++ b/pkgs/tools/networking/lsh/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, gperf, guile, gmp, zlib, liboop, gnum4}:
+{stdenv, fetchurl, gperf, guile, gmp, zlib, liboop, gnum4, pam}:
 
 stdenv.mkDerivation {
   name = "lsh-2.0.4";
@@ -7,7 +7,7 @@ stdenv.mkDerivation {
     sha256 = "614b9d63e13ad3e162c82b6405d1f67713fc622a8bc11337e72949d613713091";
   };
 
-  buildInputs = [gperf guile gmp zlib liboop gnum4];
+  buildInputs = [gperf guile gmp zlib liboop gnum4 pam];
 
   meta = {
     description = "GNU lsh, a GPL'd implementation of the SSH protocol.";
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 0b7ca70e89b3..936a18c918db 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -700,7 +700,7 @@ rec {
   };
 
   lsh = import ../tools/networking/lsh {
-    inherit stdenv fetchurl gperf guile gmp zlib liboop gnum4;
+    inherit stdenv fetchurl gperf guile gmp zlib liboop gnum4 pam;
   };
 
   man = import ../tools/misc/man {