diff --git a/erna/hdf_utils.py b/erna/hdf_utils.py
index 10e5355..5930c5e 100644
--- a/erna/hdf_utils.py
+++ b/erna/hdf_utils.py
@@ -83,7 +83,7 @@ def write_fits_to_hdf5(
                 if not initialized:
                     initialize_h5py(
                         hdf_file,
-                        array.dtype,
+                        array,
                         key=key,
                         compression=compression,
                     )
diff --git a/setup.py b/setup.py
index 1f90e6e..6c4b307 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name='erna',
-    version='0.5.0',
+    version='0.5.1',
     description='Easy RuN Access. Tools that help to do batch processing of FACT data',
     url='https://github.com/fact-project/erna',
     author='Kai Brügge, Jens Buss, Maximilian Nöthe',
@@ -26,7 +26,7 @@
         'PyMySQL',          # in anaconda
         'pytz',             # in anaconda
         'tables',           # needs to be installed by pip for some reason
-        'pyfact>=0.10.5',
+        'pyfact>=0.14.0',
         'astropy',
         'h5py',
         # 'hdf5',