diff --git a/pkgs/development/python-modules/pytorch/default.nix b/pkgs/development/python-modules/pytorch/default.nix
index da7da4ca38f..0aea3b38b5a 100644
--- a/pkgs/development/python-modules/pytorch/default.nix
+++ b/pkgs/development/python-modules/pytorch/default.nix
@@ -255,27 +255,27 @@ in buildPythonPackage rec {
   '';
 
   postFixup = stdenv.lib.optionalString stdenv.isDarwin ''
-    for f in $(ls $dev/lib/*.dylib); do
-        install_name_tool -id $dev/lib/$(basename $f) $f || true
+    for f in $(ls $lib/lib/*.dylib); do
+        install_name_tool -id $lib/lib/$(basename $f) $f || true
     done
 
-    install_name_tool -change @rpath/libshm.dylib $dev/lib/libshm.dylib $dev/lib/libtorch_python.dylib
-    install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libtorch_python.dylib
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libtorch_python.dylib
+    install_name_tool -change @rpath/libshm.dylib $lib/lib/libshm.dylib $lib/lib/libtorch_python.dylib
+    install_name_tool -change @rpath/libtorch.dylib $lib/lib/libtorch.dylib $lib/lib/libtorch_python.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libtorch_python.dylib
 
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libtorch.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libtorch.dylib
 
-    install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_observers.dylib
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_observers.dylib
+    install_name_tool -change @rpath/libtorch.dylib $lib/lib/libtorch.dylib $lib/lib/libcaffe2_observers.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libcaffe2_observers.dylib
 
-    install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_module_test_dynamic.dylib
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_module_test_dynamic.dylib
+    install_name_tool -change @rpath/libtorch.dylib $lib/lib/libtorch.dylib $lib/lib/libcaffe2_module_test_dynamic.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libcaffe2_module_test_dynamic.dylib
 
-    install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libcaffe2_detectron_ops.dylib
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libcaffe2_detectron_ops.dylib
+    install_name_tool -change @rpath/libtorch.dylib $lib/lib/libtorch.dylib $lib/lib/libcaffe2_detectron_ops.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libcaffe2_detectron_ops.dylib
 
-    install_name_tool -change @rpath/libtorch.dylib $dev/lib/libtorch.dylib $dev/lib/libshm.dylib
-    install_name_tool -change @rpath/libc10.dylib $dev/lib/libc10.dylib $dev/lib/libshm.dylib
+    install_name_tool -change @rpath/libtorch.dylib $lib/lib/libtorch.dylib $lib/lib/libshm.dylib
+    install_name_tool -change @rpath/libc10.dylib $lib/lib/libc10.dylib $lib/lib/libshm.dylib
   '';