diff --git a/CMakeLists.txt b/CMakeLists.txt
index 56be9d3..c54a2ca 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
-project(libpressio VERSION "0.55.1" LANGUAGES CXX C)
+project(libpressio VERSION "0.55.2" LANGUAGES CXX C)
 
 #correct was to set a default build type
 # https://blog.kitware.com/cmake-and-the-default-build-type/
diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
index 76bf7ce..2663a0e 100644
--- a/COPYRIGHT.txt
+++ b/COPYRIGHT.txt
@@ -1,6 +1,6 @@
 Copyright © 2021 , UChicago Argonne, LLC
 All Rights Reserved
-[libpressio, Version 0.55.1]
+[libpressio, Version 0.55.2]
 Robert Underwood
 Argonne National Laboratory
 
diff --git a/swig/libpressio.py b/swig/libpressio.py
index 7ea5711..17ac350 100644
--- a/swig/libpressio.py
+++ b/swig/libpressio.py
@@ -65,7 +65,7 @@ def _compute_path(path, key):
     def to_libpressio(x):
         op = None
         if isinstance(value, np.ndarray):
-            value_lp = pressio.io_data_to_numpy(value)
+            value_lp = pressio.io_data_from_numpy(value)
             op = pressio.option_new_data(value_lp)
             pressio.data_free(value_lp)
         elif isinstance(value, list):