diff --git a/openmc/particle_restart.py b/openmc/particle_restart.py
index 72bf3ac3d..4aad11132 100644
--- a/openmc/particle_restart.py
+++ b/openmc/particle_restart.py
@@ -43,11 +43,11 @@ class Particle(object):
         if 'filetype' not in self._f or self._f[
                 'filetype'].value.decode() != 'particle restart':
             raise IOError('{} is not a particle restart file.'.format(filename))
-        if self._f['revision'].value != 1:
+        if self._f['revision'].value != 2:
             raise IOError('Particle restart file has a file revision of {} '
                           'which is not consistent with the revision this '
                           'version of OpenMC expects ({}).'.format(
-                              self._f['revision'].value, 1))
+                              self._f['revision'].value, 2))
 
     @property
     def current_batch(self):
diff --git a/openmc/statepoint.py b/openmc/statepoint.py
index f5b5b2e72..003b08818 100644
--- a/openmc/statepoint.py
+++ b/openmc/statepoint.py
@@ -103,11 +103,11 @@ class StatePoint(object):
             raise IOError('Could not read statepoint file. This most likely '
                           'means the statepoint file was produced by a different '
                           'version of OpenMC than the one you are using.')
-        if self._f['revision'].value != 14:
+        if self._f['revision'].value != 15:
             raise IOError('Statepoint file has a file revision of {} '
                           'which is not consistent with the revision this '
                           'version of OpenMC expects ({}).'.format(
-                              self._f['revision'].value, 14))
+                              self._f['revision'].value, 15))
 
         # Set flags for what data has been read
         self._meshes_read = False