diff --git a/bluecast/preprocessing/feature_types.py b/bluecast/preprocessing/feature_types.py
index 0ddf7839..7ee25402 100644
--- a/bluecast/preprocessing/feature_types.py
+++ b/bluecast/preprocessing/feature_types.py
@@ -184,7 +184,7 @@ def identify_num_columns(self, df: pd.DataFrame) -> pd.DataFrame:
 
         for col in df.columns.to_list():
             max_length = df[col].astype(str).str.len().max()
-            if col not in num_col_list and max_length < 10:
+            if col not in num_col_list and max_length < 20:
                 try:
                     if self.check_if_column_is_float_from_string(df[col]):
                         df[col] = df[col].astype(float)
diff --git a/dist/bluecast-1.6.2-py3-none-any.whl b/dist/bluecast-1.6.2-py3-none-any.whl
index 6b0b2a3a..bb532a93 100644
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diff --git a/dist/bluecast-1.6.2.tar.gz b/dist/bluecast-1.6.2.tar.gz
index 78b2c818..c1cdfacc 100644
Binary files a/dist/bluecast-1.6.2.tar.gz and b/dist/bluecast-1.6.2.tar.gz differ