diff --git a/pyproject.toml b/pyproject.toml
index d93222f..ac96f67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "qsv"
-version = "0.4.1"
+version = "0.4.2"
 description = "A tool that provides elastic and rapid filtering for efficient analysis of huge CSV files, such as eventlogs."
 readme = "README.md"
 authors = [
diff --git a/src/qsv/operations/chainables/sed.py b/src/qsv/operations/chainables/sed.py
index ac74a25..e9bcea7 100644
--- a/src/qsv/operations/chainables/sed.py
+++ b/src/qsv/operations/chainables/sed.py
@@ -11,5 +11,5 @@ def sed(df: pl.LazyFrame, colname: str, pattern: str, replacement: str, ignoreca
     LogController.debug(f"sed condition: {pattern} on {colname}")
     pattern = pattern if type(pattern) is str else str(pattern)
     return df.with_columns(
-        pl.col(colname).cast(pl.String).str.replace(f"(?i){pattern}", replacement) if ignorecase else pl.col(colname).cast(pl.String).str.replace(pattern, replacement)
+        pl.col(colname).cast(pl.String).str.replace_all(f"(?i){pattern}", replacement) if ignorecase else pl.col(colname).cast(pl.String).str.replace_all(pattern, replacement)
     )