diff --git a/pkgs/tools/misc/keychain/default.nix b/pkgs/tools/misc/keychain/default.nix
index 1ed6be071a59..0892061a50d0 100644
--- a/pkgs/tools/misc/keychain/default.nix
+++ b/pkgs/tools/misc/keychain/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchFromGitHub, makeWrapper, coreutils, openssh, gnupg
-, procps, gnugrep, gawk, findutils, gnused }:
+, perl, procps, gnugrep, gawk, findutils, gnused }:
 
 stdenv.mkDerivation rec {
   name = "keychain-${version}";
@@ -12,15 +12,12 @@ stdenv.mkDerivation rec {
     sha256 = "0ajas58cv8mp5wb6hn1zhsqiwfxvx69p4f91a5j2as299rxgrxlp";
   };
 
-  phases = [ "unpackPhase" "patchPhase" "buildPhase" ];
+  buildInputs = [ makeWrapper perl ];
 
-  buildInputs = [ makeWrapper ];
-
-  patchPhase = "sed -i -e 's,version=.*,version=\"${version}\",g' keychain.sh";
-
-  buildPhase = ''
-    mkdir -p $out/bin
-    cp keychain.sh $out/bin/keychain
+  installPhase = ''
+    mkdir -p $out/{bin,share/man/man1}
+    cp keychain $out/bin/keychain
+    cp keychain.1 $out/share/man/man1
     wrapProgram $out/bin/keychain \
       --prefix PATH ":" "${coreutils}/bin" \
       --prefix PATH ":" "${openssh}/bin" \