diff --git a/packages/cray-libsci/package.py b/packages/cray-libsci/package.py
new file mode 100644
index 0000000..722e887
--- /dev/null
+++ b/packages/cray-libsci/package.py
@@ -0,0 +1,20 @@
+# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+import os
+
+from spack.package import *
+from spack.pkg.builtin.craylibsci import CrayLibsci as SpackCrayLibsci
+
+
+class CrayLibsci(SpackCrayLibsci):
+
+    @property
+    def external_prefix(self):
+        libsci_module = module("show", self.modname).splitlines()
+
+        for line in libsci_module:
+            if "CRAY_PE_LIBSCI_PREFIX_DIR" in line:
+                return get_path_args_from_module_line(line)[0]