diff --git a/CLI11.hpp.in b/CLI11.hpp.in
index 83f228eb..a4d6d08d 100644
--- a/CLI11.hpp.in
+++ b/CLI11.hpp.in
@@ -5,7 +5,7 @@
 // This is a standalone header file generated by MakeSingleHeader.py in CLI11/scripts
 // from: {git}
 //
-// CLI11 {version} Copyright (c) 2017-2022 University of Cincinnati, developed by Henry
+// CLI11 {version} Copyright (c) 2017-2023 University of Cincinnati, developed by Henry
 // Schreiner under NSF AWARD 1414736. All rights reserved.
 //
 // Redistribution and use in source and binary forms of CLI11, with or without
diff --git a/src/Precompile.cpp b/src/Precompile.cpp
index 81900ced..511b4735 100644
--- a/src/Precompile.cpp
+++ b/src/Precompile.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2022, University of Cincinnati, developed by Henry Schreiner
+// Copyright (c) 2017-2023, University of Cincinnati, developed by Henry Schreiner
 // under NSF AWARD 1414736 and by the respective contributors.
 // All rights reserved.
 //
diff --git a/tests/BoostOptionTypeTest.cpp b/tests/BoostOptionTypeTest.cpp
index c3cd8185..1dabc37d 100644
--- a/tests/BoostOptionTypeTest.cpp
+++ b/tests/BoostOptionTypeTest.cpp
@@ -1,4 +1,4 @@
-// Copyright (c) 2017-2022, University of Cincinnati, developed by Henry Schreiner
+// Copyright (c) 2017-2023, University of Cincinnati, developed by Henry Schreiner
 // under NSF AWARD 1414736 and by the respective contributors.
 // All rights reserved.
 //