diff --git a/ci.nix b/ci.nix
index 8a3c2192..6a8f33d7 100644
--- a/ci.nix
+++ b/ci.nix
@@ -20,6 +20,7 @@ in
       xo-reflectutil
       xo-arena
       xo-facet
+      xo-printable2
       xo-alloc2
       xo-gc
       xo-allocutil
@@ -29,7 +30,6 @@ in
       xo-ratio
       xo-unit
       xo-callback
-      xo-printable2
       xo-alloc
       xo-stringtable2
       xo-object
diff --git a/xo.nix b/xo.nix
index 8932a4db..9c2b1b22 100644
--- a/xo.nix
+++ b/xo.nix
@@ -31,6 +31,7 @@ let
     xo-reflectutil    = callPackage pkgs/xo-reflectutil.nix    { stdenv = jitStdenv; };
     xo-arena          = callPackage pkgs/xo-arena.nix          { stdenv = jitStdenv; buildDocs = true; };
     xo-facet          = callPackage pkgs/xo-facet.nix          { stdenv = jitStdenv; };
+    xo-printable2     = callPackage pkgs/xo-printable2.nix     { stdenv = jitStdenv; };
     xo-alloc2         = callPackage pkgs/xo-alloc2.nix         { stdenv = jitStdenv; buildDocs = true; };
     xo-allocutil      = callPackage pkgs/xo-allocutil.nix      { stdenv = jitStdenv; };
     xo-refcnt         = callPackage pkgs/xo-refcnt.nix         { stdenv = jitStdenv; };
@@ -44,7 +45,6 @@ let
     xo-unit           = callPackage pkgs/xo-unit.nix           { stdenv = jitStdenv; buildDocs = true; buildExamples = true; };
     xo-pyunit         = callPackage pkgs/xo-pyunit.nix         { stdenv = jitStdenv; };
     xo-callback       = callPackage pkgs/xo-callback.nix       { stdenv = jitStdenv; };
-    xo-printable2     = callPackage pkgs/xo-printable2.nix     { stdenv = jitStdenv; };
     xo-alloc          = callPackage pkgs/xo-alloc.nix          { stdenv = jitStdenv; buildDocs = true; };
     xo-stringtable2   = callPackage pkgs/xo-stringtable2.nix   { stdenv = jitStdenv; };
     xo-gc             = callPackage pkgs/xo-gc.nix             { stdenv = jitStdenv; buildDocs = true; };