diff --git a/pkgs/tools/networking/mosh/default.nix b/pkgs/tools/networking/mosh/default.nix
index e87b550aa6fe..7823b7eb9096 100644
--- a/pkgs/tools/networking/mosh/default.nix
+++ b/pkgs/tools/networking/mosh/default.nix
@@ -11,11 +11,12 @@ stdenv.mkDerivation rec {
     sha256 = "05hjhlp6lk8yjcy59zywpf0r6s0h0b9zxq0lw66dh9x8vxrhaq6s";
   };
 
-  nativeBuildInputs = [ autoreconfHook pkg-config makeWrapper ];
-  buildInputs = [ protobuf ncurses zlib openssl bash-completion ]
-    ++ (with perlPackages; [ perl IOTty ])
+  nativeBuildInputs = [ autoreconfHook pkg-config makeWrapper protobuf ];
+  buildInputs = [ protobuf ncurses zlib openssl bash-completion perlPackages.perl ]
     ++ lib.optional withUtempter libutempter;
 
+  strictDeps = true;
+
   enableParallelBuilding = true;
 
   patches = [