diff --git a/aguaclara/research/environmental_processes_analysis.py b/aguaclara/research/environmental_processes_analysis.py
index 4bd143b7..8d2db3e1 100644
--- a/aguaclara/research/environmental_processes_analysis.py
+++ b/aguaclara/research/environmental_processes_analysis.py
@@ -220,7 +220,7 @@ def Gran(data_file_path):
     df = pd.read_csv(data_file_path, delimiter='\t', header=5)
     V_t = np.array(pd.to_numeric(df.iloc[0:, 0]))*u.mL
     pH = np.array(pd.to_numeric(df.iloc[0:, 1]))
-    df = pd.read_csv(data_file_path, delimiter='\t', header=-1, nrows=5)
+    df = pd.read_csv(data_file_path, delimiter='\t', header=None, nrows=5)
     V_S = pd.to_numeric(df.iloc[0, 1])*u.mL
     N_t = pd.to_numeric(df.iloc[1, 1])*u.mole/u.L
     V_eq = pd.to_numeric(df.iloc[2, 1])*u.mL
diff --git a/setup.py b/setup.py
index 77b7d639..7a81749d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 setup(
     name = 'aguaclara',
-    version = '0.1.13',
+    version = '0.1.14',
     description = (
         'An open-source Python package for designing and performing research '
         'on AguaClara water treatment plants.'