diff --git a/VERSION b/VERSION
index 06172e005628d24b284152799c84e786e86cae6f..95e4690647feb1d7cbd01e7994a036044ef09297 100644
--- a/VERSION
+++ b/VERSION
@@ -1,2 +1,2 @@
-3.0.0b55
+3.0.0b56
 
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 1564091e49dd182f563cdb87a57d27bcd3c17141..d10fbeb1dcab0fe53b3c8bb54124cf6f1351820f 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -64,7 +64,7 @@ copyright = u'2016, BSC-CNS Earth Sciences Department'
 # The short X.Y version.
 version = '3.0b'
 # The full version, including alpha/beta/rc tags.
-release = '3.0.0b55'
+release = '3.0.0b56'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/earthdiagnostics/EarthDiagnostics.pdf b/earthdiagnostics/EarthDiagnostics.pdf
index b7d4ac394205ea62d2f2d4e3308211f97ddacf44..1b317743d063e69a71400c28b667fc38d8c41c41 100644
Binary files a/earthdiagnostics/EarthDiagnostics.pdf and b/earthdiagnostics/EarthDiagnostics.pdf differ
diff --git a/earthdiagnostics/ocean/interpolate.py b/earthdiagnostics/ocean/interpolate.py
index 0f60dc788df4f926135dca0957dad3d3938cf84d..4b22352678f9bf7af4ba21b855bf7c3aa5884abf 100644
--- a/earthdiagnostics/ocean/interpolate.py
+++ b/earthdiagnostics/ocean/interpolate.py
@@ -92,10 +92,11 @@ class Interpolate(Diagnostic):
 
         job_list = list()
         for startdate, member, chunk in diags.config.experiment.get_chunk_list():
-            job_list.append(
-                Interpolate(diags.data_manager, startdate, member, chunk,
-                            options['domain'], options['variable'], options['target_grid'],
-                            diags.config.experiment.model_version, options['invert_lat'], options['original_grid']))
+            for variable in options['variable']:
+                job_list.append(
+                    Interpolate(diags.data_manager, startdate, member, chunk,
+                                options['domain'], variable, options['target_grid'],
+                                diags.config.experiment.model_version, options['invert_lat'], options['original_grid']))
         return job_list
 
     def compute(self):