diff --git a/src/diffpy/pdfgui/applications/__init__.py b/src/diffpy/pdfgui/applications/__init__.py
index d698044f..8bdc5f5a 100644
--- a/src/diffpy/pdfgui/applications/__init__.py
+++ b/src/diffpy/pdfgui/applications/__init__.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2009 Trustees of the Columbia University
+#                   (c) 2009-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/control/structureviewer.py b/src/diffpy/pdfgui/control/structureviewer.py
index d58def97..85308d10 100644
--- a/src/diffpy/pdfgui/control/structureviewer.py
+++ b/src/diffpy/pdfgui/control/structureviewer.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2009 Trustees of the Columbia University
+#                   (c) 2009-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/tests/__init__.py b/src/diffpy/pdfgui/tests/__init__.py
index accc2e33..863e9949 100644
--- a/src/diffpy/pdfgui/tests/__init__.py
+++ b/src/diffpy/pdfgui/tests/__init__.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2012 Trustees of the Columbia University
+#                   (c) 2012-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/tests/run.py b/src/diffpy/pdfgui/tests/run.py
index f1bf407e..461d7c01 100644
--- a/src/diffpy/pdfgui/tests/run.py
+++ b/src/diffpy/pdfgui/tests/run.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2012 Trustees of the Columbia University
+#                   (c) 2012-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/tests/rundeps.py b/src/diffpy/pdfgui/tests/rundeps.py
index 0181a83f..9818fc86 100644
--- a/src/diffpy/pdfgui/tests/rundeps.py
+++ b/src/diffpy/pdfgui/tests/rundeps.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2012 Trustees of the Columbia University
+#                   (c) 2012-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/tests/showphasenotebookpanel.py b/src/diffpy/pdfgui/tests/showphasenotebookpanel.py
index 4dfb8cde..71c3f0d3 100644
--- a/src/diffpy/pdfgui/tests/showphasenotebookpanel.py
+++ b/src/diffpy/pdfgui/tests/showphasenotebookpanel.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2016 Trustees of the Columbia University
+#                   (c) 2016-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas
diff --git a/src/diffpy/pdfgui/tests/testutils.py b/src/diffpy/pdfgui/tests/testutils.py
index eb981e2b..70147319 100644
--- a/src/diffpy/pdfgui/tests/testutils.py
+++ b/src/diffpy/pdfgui/tests/testutils.py
@@ -3,7 +3,7 @@
 #
 # diffpy.pdfgui     by DANSE Diffraction group
 #                   Simon J. L. Billinge
-#                   (c) 2016 Trustees of the Columbia University
+#                   (c) 2016-2024 Trustees of the Columbia University
 #                   in the City of New York.  All rights reserved.
 #
 # File coded by:    Pavol Juhas