diff --git a/parse-hamnosys.py b/parse-hamnosys.py
index ca23a06..52c18b2 100644
--- a/parse-hamnosys.py
+++ b/parse-hamnosys.py
@@ -15,7 +15,7 @@
 
 def equal_to_nan(a):
     # TBD remove not needed logic
-    return ((a == np.NaN) | (np.isnan(a) & np.isnan(np.NaN))).all()
+    return ((a == np.nan) | (np.isnan(a) & np.isnan(np.nan))).all()
 
 
 def get_args_parser():
@@ -139,7 +139,7 @@ def main(args):
         "Handposition - LR",
         "Handposition - TB",
         "Handposition - Distance"],
-        fill_value=np.NaN)
+        fill_value=np.nan)
 
     # Change default values for columns where 0 means None
     data["NonDom first"] = 0
@@ -839,7 +839,7 @@ def main(args):
     for index, row in df.iterrows():
         error = 0
         for i in range(1, len(df.columns)):
-            if math.isclose(float(row[i]), float(-1.0), rel_tol=1e-5):
+            if math.isclose(float(row.iloc[i]), float(-1.0), rel_tol=1e-5):
                 error = 1
                 df_success = df_success.drop(index)
                 break
diff --git a/requirements.txt b/requirements.txt
index 33f0627..9f56db4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1 @@
-pandas~=1.1.5
\ No newline at end of file
+pandas~=2.3.3