diff --git a/nix/arcanist.nix b/nix/arcanist.nix
index 03f8caef8..489c32149 100644
--- a/nix/arcanist.nix
+++ b/nix/arcanist.nix
@@ -1,64 +1,64 @@
 { stdenv
 , lib
 , cacert
 , fetchFromGitHub
 , installShellFiles
 , makeWrapper
 , php80
 , python3
 , which
 }:
 
 stdenv.mkDerivation {
   pname = "arcanist";
   version = "20220517";
 
   src = fetchFromGitHub {
     owner = "phacility";
     repo = "arcanist";
     rev = "85c953ebe4a6fef332158fd757d97c5a58682d3a";
     sha256 = "0x847fw74mzrbhzpgc4iqgvs6dsf4svwfa707dsbxi78fn2lxbl7";
   };
 
   # These need to be in PATH during the build
   nativeBuildInputs = [ php80 python3 installShellFiles makeWrapper ];
 
   # Since we are exporting a script, we do not need to do an actual "build"
   doBuild = false;
 
   installPhase = ''
     # Copy arcanist contents
     mkdir -p $out/libexec
     cp -R . $out/libexec/arcanist
 
     # provide a recent up-to-date certificate bundle for ssl
     ln -sf ${cacert}/etc/ssl/certs/ca-bundle.crt \
       $out/libexec/arcanist/resources/ssl/default.pem
 
     # convert `#!/usr/bin/env php` into calling nixpkgs php interpreter
     patchShebangs $out/libexec/arcanist/bin/arc
 
     # Create a bin/arc which points to the real script, but provides
     # assumptions such as the PATH including python3 and which
     makeWrapper $out/libexec/arcanist/bin/arc $out/bin/arc \
-      --prefix PATH : ${lib.makeBinPath [ which python3 ]}
+      --prefix PATH : ${lib.makeBinPath [ which python3 php80 ]}
 
     # Add shell completion for bash
     $out/bin/arc shell-complete --generate --
     installShellCompletion --cmd arc --bash \
       $out/libexec/arcanist/support/shell/rules/bash-rules.sh
   '';
 
   # Ensure `arc` is able to run without failing
   doInstallCheck = true;
   installCheckPhase = ''
     $out/bin/arc help diff -- > /dev/null
   '';
 
   meta = {
     description = "Command line interface to Phabricator";
     homepage = "http://phabricator.org";
     license = lib.licenses.asl20;
     platforms = lib.platforms.unix;
   };
 }