diff --git a/CHANGELOG.md b/CHANGELOG.md
index d5b10565..e542413a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ### Bug Fixes
 1. [#636](https://github.com/influxdata/influxdb-client-python/pull/636): Handle missing data in data frames
-2. [#638](https://github.com/influxdata/influxdb-client-python/pull/638): Refactor DataFrame operations to avoid chained assignment and resolve FutureWarning in pandas, ensuring compatibility with pandas 3.0.
+2. [#638](https://github.com/influxdata/influxdb-client-python/pull/638), [#642](https://github.com/influxdata/influxdb-client-python/pull/642): Refactor DataFrame operations to avoid chained assignment and resolve FutureWarning in pandas, ensuring compatibility with pandas 3.0.
 
 ### Documentation
 1. [#639](https://github.com/influxdata/influxdb-client-python/pull/639): Use Markdown for `README`
diff --git a/influxdb_client/client/write/dataframe_serializer.py b/influxdb_client/client/write/dataframe_serializer.py
index 98262526..6121171f 100644
--- a/influxdb_client/client/write/dataframe_serializer.py
+++ b/influxdb_client/client/write/dataframe_serializer.py
@@ -234,7 +234,7 @@ def __init__(self, data_frame, point_settings, precision=DEFAULT_WRITE_PRECISION
 
         for k, v in dict(data_frame.dtypes).items():
             if k in data_frame_tag_columns:
-                data_frame.replace({k: ''}, np.nan, inplace=True)
+                data_frame = data_frame.replace({k: ''}, np.nan)
 
         self.data_frame = data_frame
         self.f = f