diff --git a/CMakeLists.txt b/CMakeLists.txt
index 3cb96a9..b0868c8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 ############################################################################################
 # nemo-feedback
 
diff --git a/README.md b/README.md
index 0e5fd73..365b85f 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 ![CI](https://github.com/MetOffice/nemo-feedback/actions/workflows/ci.yml/badge.svg)
 [![License](https://img.shields.io/badge/License-BSD_3--Clause-blue.svg)](https://opensource.org/licenses/BSD-3-Clause)
-© British Crown Copyright 2025 Met Office. All rights reserved.
+© British Crown Copyright 2026 Met Office. All rights reserved.
 
 # nemo-feedback
 
diff --git a/ci/CMakeLists.txt b/ci/CMakeLists.txt
index d305264..1bd927f 100644
--- a/ci/CMakeLists.txt
+++ b/ci/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 cmake_minimum_required( VERSION 3.18 FATAL_ERROR )
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c7ff0e0..7ab18a3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 add_subdirectory(nemo-feedback)
 if(BUILD_TESTING)
diff --git a/src/nemo-feedback/CMakeLists.txt b/src/nemo-feedback/CMakeLists.txt
index 67d0e5f..8a31301 100644
--- a/src/nemo-feedback/CMakeLists.txt
+++ b/src/nemo-feedback/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 list( APPEND nemo_fdbk_src_files
     instantiateObsFilterFactory.h
diff --git a/src/nemo-feedback/NemoFeedback.cc b/src/nemo-feedback/NemoFeedback.cc
index baa468b..9e1a4d8 100644
--- a/src/nemo-feedback/NemoFeedback.cc
+++ b/src/nemo-feedback/NemoFeedback.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "nemo-feedback/NemoFeedback.h"
diff --git a/src/nemo-feedback/NemoFeedback.h b/src/nemo-feedback/NemoFeedback.h
index a25c685..7ab251e 100644
--- a/src/nemo-feedback/NemoFeedback.h
+++ b/src/nemo-feedback/NemoFeedback.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #pragma once
diff --git a/src/nemo-feedback/NemoFeedbackDataCreator.cc b/src/nemo-feedback/NemoFeedbackDataCreator.cc
index a832dad..1689aac 100644
--- a/src/nemo-feedback/NemoFeedbackDataCreator.cc
+++ b/src/nemo-feedback/NemoFeedbackDataCreator.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "nemo-feedback/NemoFeedbackDataCreator.h"
diff --git a/src/nemo-feedback/NemoFeedbackDataCreator.h b/src/nemo-feedback/NemoFeedbackDataCreator.h
index a36be11..ede75d6 100644
--- a/src/nemo-feedback/NemoFeedbackDataCreator.h
+++ b/src/nemo-feedback/NemoFeedbackDataCreator.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #pragma once
diff --git a/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.cc b/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.cc
index 31651de..12072a6 100644
--- a/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.cc
+++ b/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.h"
diff --git a/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.h b/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.h
index 13e0fdc..346d9cf 100644
--- a/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.h
+++ b/src/nemo-feedback/NemoFeedbackParameterTraitsOutputDtype.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #pragma once
diff --git a/src/nemo-feedback/NemoFeedbackParameters.h b/src/nemo-feedback/NemoFeedbackParameters.h
index 2b880f8..f6e5de1 100644
--- a/src/nemo-feedback/NemoFeedbackParameters.h
+++ b/src/nemo-feedback/NemoFeedbackParameters.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #pragma once
diff --git a/src/nemo-feedback/feedback_io/Data.cc b/src/nemo-feedback/feedback_io/Data.cc
index 3717f0a..0cb91d6 100644
--- a/src/nemo-feedback/feedback_io/Data.cc
+++ b/src/nemo-feedback/feedback_io/Data.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/feedback_io/Data.h b/src/nemo-feedback/feedback_io/Data.h
index e90fdd1..85c5410 100644
--- a/src/nemo-feedback/feedback_io/Data.h
+++ b/src/nemo-feedback/feedback_io/Data.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/feedback_io/DataIndexer.cc b/src/nemo-feedback/feedback_io/DataIndexer.cc
index 0c17b57..3981934 100644
--- a/src/nemo-feedback/feedback_io/DataIndexer.cc
+++ b/src/nemo-feedback/feedback_io/DataIndexer.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/feedback_io/DataIndexer.h b/src/nemo-feedback/feedback_io/DataIndexer.h
index 225dad1..f6107c2 100644
--- a/src/nemo-feedback/feedback_io/DataIndexer.h
+++ b/src/nemo-feedback/feedback_io/DataIndexer.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/feedback_io/Utils.cc b/src/nemo-feedback/feedback_io/Utils.cc
index 25a20f4..13e3682 100644
--- a/src/nemo-feedback/feedback_io/Utils.cc
+++ b/src/nemo-feedback/feedback_io/Utils.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "nemo-feedback/feedback_io/Utils.h"
diff --git a/src/nemo-feedback/feedback_io/Utils.h b/src/nemo-feedback/feedback_io/Utils.h
index e222edb..6fc61f7 100644
--- a/src/nemo-feedback/feedback_io/Utils.h
+++ b/src/nemo-feedback/feedback_io/Utils.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/feedback_io/Writer.cc b/src/nemo-feedback/feedback_io/Writer.cc
index 6b30e27..db8104b 100644
--- a/src/nemo-feedback/feedback_io/Writer.cc
+++ b/src/nemo-feedback/feedback_io/Writer.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "nemo-feedback/feedback_io/Writer.h"
diff --git a/src/nemo-feedback/feedback_io/Writer.h b/src/nemo-feedback/feedback_io/Writer.h
index cf415c4..99b6eed 100644
--- a/src/nemo-feedback/feedback_io/Writer.h
+++ b/src/nemo-feedback/feedback_io/Writer.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 
diff --git a/src/nemo-feedback/instantiateObsFilterFactory.h b/src/nemo-feedback/instantiateObsFilterFactory.h
index 1857d01..537da70 100644
--- a/src/nemo-feedback/instantiateObsFilterFactory.h
+++ b/src/nemo-feedback/instantiateObsFilterFactory.h
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #pragma once
diff --git a/src/tests/CMakeLists.txt b/src/tests/CMakeLists.txt
index b9751fa..87b175c 100644
--- a/src/tests/CMakeLists.txt
+++ b/src/tests/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 add_subdirectory(testinput)
 add_subdirectory(testoutput)
diff --git a/src/tests/Data/CMakeLists.txt b/src/tests/Data/CMakeLists.txt
index 6db58b9..9dcf1ee 100644
--- a/src/tests/Data/CMakeLists.txt
+++ b/src/tests/Data/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 list( APPEND nemofeedback_test_data
 hofx_sic_obs.nc
diff --git a/src/tests/mains/CMakeLists.txt b/src/tests/mains/CMakeLists.txt
index beee4d0..3d7b096 100644
--- a/src/tests/mains/CMakeLists.txt
+++ b/src/tests/mains/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 ecbuild_add_executable( TARGET  test_NemoInputsFilters.x
                         SOURCES TestObsFilters.cc
diff --git a/src/tests/mains/TestObsFilters.cc b/src/tests/mains/TestObsFilters.cc
index aa5ad59..2036dfb 100644
--- a/src/tests/mains/TestObsFilters.cc
+++ b/src/tests/mains/TestObsFilters.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include "../test/ufo/ObsFilters.h"
diff --git a/src/tests/nemo-feedback/CMakeLists.txt b/src/tests/nemo-feedback/CMakeLists.txt
index 5c1fe85..1110a34 100644
--- a/src/tests/nemo-feedback/CMakeLists.txt
+++ b/src/tests/nemo-feedback/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 include_directories( ${PROJECT_SOURCE_DIR}/src )
 
diff --git a/src/tests/nemo-feedback/test_feedback_data.cc b/src/tests/nemo-feedback/test_feedback_data.cc
index 7f3fcc3..3d45652 100644
--- a/src/tests/nemo-feedback/test_feedback_data.cc
+++ b/src/tests/nemo-feedback/test_feedback_data.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include <iostream>
diff --git a/src/tests/nemo-feedback/test_feedback_writer.cc b/src/tests/nemo-feedback/test_feedback_writer.cc
index 504cb67..c75e021 100644
--- a/src/tests/nemo-feedback/test_feedback_writer.cc
+++ b/src/tests/nemo-feedback/test_feedback_writer.cc
@@ -1,5 +1,5 @@
 /*
- * (C) British Crown Copyright 2025 Met Office
+ * (C) British Crown Copyright 2026 Met Office
  */
 
 #include<netcdf>
diff --git a/src/tests/testinput/CMakeLists.txt b/src/tests/testinput/CMakeLists.txt
index 5082828..4e62346 100644
--- a/src/tests/testinput/CMakeLists.txt
+++ b/src/tests/testinput/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 list( APPEND fdbk_writer_test_input
   hofx_sic_writer.yaml
diff --git a/src/tests/testoutput/CMakeLists.txt b/src/tests/testoutput/CMakeLists.txt
index d6bc7b6..2f4ec9a 100644
--- a/src/tests/testoutput/CMakeLists.txt
+++ b/src/tests/testoutput/CMakeLists.txt
@@ -1,4 +1,4 @@
-# (C) British Crown Copyright 2025 Met Office
+# (C) British Crown Copyright 2026 Met Office
 
 list( APPEND fdbk_writer_test_output
   test_hofx_sic_writer_out_ref.cdl