diff --git a/shells.nix b/shells.nix
index 26bc9504..f0b84f65 100644
--- a/shells.nix
+++ b/shells.nix
@@ -327,12 +327,12 @@ in
     testutil       = pkgs.xo-testutil;
     alloc2         = pkgs.xo-alloc2;
     refcnt         = pkgs.xo-refcnt;
+    pyutil         = pkgs.xo-pyutil;
     reflect        = pkgs.xo-reflect;
     stringtable2   = pkgs.xo-stringtable2;
     object2        = pkgs.xo-object2;
     gc             = pkgs.xo-gc;
     allocutil      = pkgs.xo-allocutil;
-    pyutil         = pkgs.xo-pyutil;
     pyreflect      = pkgs.xo-pyreflect;
     ratio          = pkgs.xo-ratio;
     unit           = pkgs.xo-unit;
diff --git a/xo.nix b/xo.nix
index 9a1b344f..95f6c2c5 100644
--- a/xo.nix
+++ b/xo.nix
@@ -37,12 +37,12 @@ let
     xo-testutil       = callPackage pkgs/xo-testutil.nix       { stdenv = jitStdenv; };
     xo-alloc2         = callPackage pkgs/xo-alloc2.nix         { stdenv = jitStdenv; buildDocs = true; };
     xo-refcnt         = callPackage pkgs/xo-refcnt.nix         { stdenv = jitStdenv; };
+    xo-pyutil         = callPackage pkgs/xo-pyutil.nix         { stdenv = jitStdenv; };
     xo-reflect        = callPackage pkgs/xo-reflect.nix        { stdenv = jitStdenv; };
     xo-stringtable2   = callPackage pkgs/xo-stringtable2.nix   { stdenv = jitStdenv; };
     xo-object2        = callPackage pkgs/xo-object2.nix        { stdenv = jitStdenv; };
     xo-gc             = callPackage pkgs/xo-gc.nix             { stdenv = jitStdenv; buildDocs = true; };
     xo-allocutil      = callPackage pkgs/xo-allocutil.nix      { stdenv = jitStdenv; };
-    xo-pyutil         = callPackage pkgs/xo-pyutil.nix         { stdenv = jitStdenv; };
     xo-pyreflect      = callPackage pkgs/xo-pyreflect.nix      { stdenv = jitStdenv; };
     xo-ratio          = callPackage pkgs/xo-ratio.nix          { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
     xo-unit           = callPackage pkgs/xo-unit.nix           { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };