diff --git a/pkgs/by-name/da/daemontools/package.nix b/pkgs/by-name/da/daemontools/package.nix
index 378910c80778..e137079280e7 100644
--- a/pkgs/by-name/da/daemontools/package.nix
+++ b/pkgs/by-name/da/daemontools/package.nix
@@ -22,7 +22,13 @@ stdenv.mkDerivation rec {
     sha256 = "07scvw88faxkscxi91031pjkpccql6wspk4yrlnsbrrb5c0kamd5";
   };
 
-  patches = [ ./fix-nix-usernamespace-build.patch ];
+  patches = [
+    (fetchurl {
+      url = "https://salsa.debian.org/debian/daemontools/-/raw/1844f0e704ab66844da14354a16ea068eba0403f/debian/patches/0005-fix-ftbfs.patch";
+      hash = "sha256-Q7t0kwajjTW2Ms5m44E4spBwHi5Xi6Y39FQVsawr8LA=";
+    })
+    ./fix-nix-usernamespace-build.patch
+  ];
 
   outputs = [
     "out"
@@ -37,7 +43,7 @@ stdenv.mkDerivation rec {
     sed -i -e '1 s_$_ -include ${glibc.dev}/include/errno.h_' src/conf-cc
 
     substituteInPlace src/Makefile \
-      --replace '/bin/sh' '${bash}/bin/bash -oxtrace'
+      --replace-fail '/bin/sh' '${bash}/bin/bash -oxtrace'
 
     sed -i -e "s_^PATH=.*_PATH=$src/daemontools-${version}/compile:''${PATH}_" src/rts.tests