diff --git a/src/ocrmypdf/_pipeline.py b/src/ocrmypdf/_pipeline.py
index 0cefc19c..ead6d14c 100644
--- a/src/ocrmypdf/_pipeline.py
+++ b/src/ocrmypdf/_pipeline.py
@@ -1,4 +1,5 @@
-# SPDX-FileCopyrightText: 2022 James R. Barlow
+# SPDX-FileCopyrightText: 2018-2022 James R. Barlow
+# SPDX-FileCopyrightText: 2019 Martin Wind
 # SPDX-License-Identifier: MPL-2.0
 
 """OCRmyPDF page processing pipeline functions."""
diff --git a/src/ocrmypdf/_sync.py b/src/ocrmypdf/_sync.py
index 6a9a85a8..26d986f1 100644
--- a/src/ocrmypdf/_sync.py
+++ b/src/ocrmypdf/_sync.py
@@ -1,4 +1,5 @@
-# SPDX-FileCopyrightText: 2022 James R. Barlow
+# SPDX-FileCopyrightText: 2019-2022 James R. Barlow
+# SPDX-FileCopyrightText: 2019 Martin Wind
 # SPDX-License-Identifier: MPL-2.0
 
 """Implements the concurrent and page synchronous parts of the pipeline."""