diff --git a/src/Makefile b/src/Makefile
index fa6297936..dcd3f1fea 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -1,5 +1,5 @@
 # Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-# Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+# Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 #
 # Stockfish is free software: you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
diff --git a/src/benchmark.cpp b/src/benchmark.cpp
index 039e384c9..4e266db89 100644
--- a/src/benchmark.cpp
+++ b/src/benchmark.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/benchmark.h b/src/benchmark.h
index d6bdc275d..a6606e78c 100644
--- a/src/benchmark.h
+++ b/src/benchmark.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/bitboard.cpp b/src/bitboard.cpp
index 350e56c92..4decb8d66 100644
--- a/src/bitboard.cpp
+++ b/src/bitboard.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/bitboard.h b/src/bitboard.h
index 1da11d45c..f97ff3219 100644
--- a/src/bitboard.h
+++ b/src/bitboard.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/engine.cpp b/src/engine.cpp
index 40466c8f8..355103c7b 100644
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/engine.h b/src/engine.h
index 6fd1ce040..10c92d759 100644
--- a/src/engine.h
+++ b/src/engine.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index e7133f2df..745bd3e4d 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/evaluate.h b/src/evaluate.h
index 8ed2eb994..b4f54a381 100644
--- a/src/evaluate.h
+++ b/src/evaluate.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/history.h b/src/history.h
index 3aa9ef623..c98a7ee22 100644
--- a/src/history.h
+++ b/src/history.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/main.cpp b/src/main.cpp
index 107b5e43d..9a7376efb 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/memory.cpp b/src/memory.cpp
index f4aa8fc26..94a599399 100644
--- a/src/memory.cpp
+++ b/src/memory.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/memory.h b/src/memory.h
index dad07df1d..c307a1317 100644
--- a/src/memory.h
+++ b/src/memory.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/misc.cpp b/src/misc.cpp
index 886544b6c..3ddae503c 100644
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/misc.h b/src/misc.h
index c9951e555..f1016b496 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/movegen.cpp b/src/movegen.cpp
index 697a83cdf..d22faad25 100644
--- a/src/movegen.cpp
+++ b/src/movegen.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/movegen.h b/src/movegen.h
index 287fd8927..7f209f92a 100644
--- a/src/movegen.h
+++ b/src/movegen.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/movepick.cpp b/src/movepick.cpp
index 15f64d1cb..415d252f3 100644
--- a/src/movepick.cpp
+++ b/src/movepick.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/movepick.h b/src/movepick.h
index b1e041c17..08bd9a539 100644
--- a/src/movepick.h
+++ b/src/movepick.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/features/full_threats.cpp b/src/nnue/features/full_threats.cpp
index 9006d851b..4e3ba81cf 100644
--- a/src/nnue/features/full_threats.cpp
+++ b/src/nnue/features/full_threats.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/features/full_threats.h b/src/nnue/features/full_threats.h
index e4fa3331b..5b2582954 100644
--- a/src/nnue/features/full_threats.h
+++ b/src/nnue/features/full_threats.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
diff --git a/src/nnue/features/half_ka_v2_hm.cpp b/src/nnue/features/half_ka_v2_hm.cpp
index 56779ddce..a82e89de4 100644
--- a/src/nnue/features/half_ka_v2_hm.cpp
+++ b/src/nnue/features/half_ka_v2_hm.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/features/half_ka_v2_hm.h b/src/nnue/features/half_ka_v2_hm.h
index c58a3246b..49b0a87a4 100644
--- a/src/nnue/features/half_ka_v2_hm.h
+++ b/src/nnue/features/half_ka_v2_hm.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/layers/affine_transform.h b/src/nnue/layers/affine_transform.h
index 7ead09327..a3d072f67 100644
--- a/src/nnue/layers/affine_transform.h
+++ b/src/nnue/layers/affine_transform.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/layers/affine_transform_sparse_input.h b/src/nnue/layers/affine_transform_sparse_input.h
index 789ee454e..5e0551f69 100644
--- a/src/nnue/layers/affine_transform_sparse_input.h
+++ b/src/nnue/layers/affine_transform_sparse_input.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/layers/clipped_relu.h b/src/nnue/layers/clipped_relu.h
index a8679d14d..7284c1033 100644
--- a/src/nnue/layers/clipped_relu.h
+++ b/src/nnue/layers/clipped_relu.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/layers/sqr_clipped_relu.h b/src/nnue/layers/sqr_clipped_relu.h
index 4218c0fe2..53412d014 100644
--- a/src/nnue/layers/sqr_clipped_relu.h
+++ b/src/nnue/layers/sqr_clipped_relu.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/network.cpp b/src/nnue/network.cpp
index a4d464df0..d1f2b14c3 100644
--- a/src/nnue/network.cpp
+++ b/src/nnue/network.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/network.h b/src/nnue/network.h
index ba8f469f7..d0e3218ca 100644
--- a/src/nnue/network.h
+++ b/src/nnue/network.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_accumulator.cpp b/src/nnue/nnue_accumulator.cpp
index 338d291e8..16af8d5f6 100644
--- a/src/nnue/nnue_accumulator.cpp
+++ b/src/nnue/nnue_accumulator.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_accumulator.h b/src/nnue/nnue_accumulator.h
index 1ccab5f2f..438074f43 100644
--- a/src/nnue/nnue_accumulator.h
+++ b/src/nnue/nnue_accumulator.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_architecture.h b/src/nnue/nnue_architecture.h
index 5093abdd7..71fce9bd5 100644
--- a/src/nnue/nnue_architecture.h
+++ b/src/nnue/nnue_architecture.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_common.h b/src/nnue/nnue_common.h
index 8a877ae2b..febe7ca70 100644
--- a/src/nnue/nnue_common.h
+++ b/src/nnue/nnue_common.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_feature_transformer.h b/src/nnue/nnue_feature_transformer.h
index 98b031f6b..99cda2a69 100644
--- a/src/nnue/nnue_feature_transformer.h
+++ b/src/nnue/nnue_feature_transformer.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_misc.cpp b/src/nnue/nnue_misc.cpp
index 220140e5e..66a6764a3 100644
--- a/src/nnue/nnue_misc.cpp
+++ b/src/nnue/nnue_misc.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/nnue_misc.h b/src/nnue/nnue_misc.h
index 7ecfd58a2..ecece5589 100644
--- a/src/nnue/nnue_misc.h
+++ b/src/nnue/nnue_misc.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/nnue/simd.h b/src/nnue/simd.h
index 6160221b9..25891163e 100644
--- a/src/nnue/simd.h
+++ b/src/nnue/simd.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/numa.h b/src/numa.h
index 76d265af2..99169c211 100644
--- a/src/numa.h
+++ b/src/numa.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/perft.h b/src/perft.h
index e249a8e49..24d125cbf 100644
--- a/src/perft.h
+++ b/src/perft.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/position.cpp b/src/position.cpp
index f32530fdd..d8b02e8ab 100644
--- a/src/position.cpp
+++ b/src/position.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/position.h b/src/position.h
index e49e10f96..a136c0729 100644
--- a/src/position.h
+++ b/src/position.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/score.cpp b/src/score.cpp
index 561bc23c4..ea62577b9 100644
--- a/src/score.cpp
+++ b/src/score.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/score.h b/src/score.h
index eda90af35..cf89d3cdd 100644
--- a/src/score.h
+++ b/src/score.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/search.cpp b/src/search.cpp
index a880a741f..afdda262c 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/search.h b/src/search.h
index eb4dda77c..202f7c8db 100644
--- a/src/search.h
+++ b/src/search.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/shm.h b/src/shm.h
index b870afc24..9bf13f234 100644
--- a/src/shm.h
+++ b/src/shm.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/shm_linux.h b/src/shm_linux.h
index 52abe8ec4..1e344e93f 100644
--- a/src/shm_linux.h
+++ b/src/shm_linux.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/syzygy/tbprobe.cpp b/src/syzygy/tbprobe.cpp
index c371259d6..8db007194 100644
--- a/src/syzygy/tbprobe.cpp
+++ b/src/syzygy/tbprobe.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/syzygy/tbprobe.h b/src/syzygy/tbprobe.h
index 4a6c3b763..7b60d6e20 100644
--- a/src/syzygy/tbprobe.h
+++ b/src/syzygy/tbprobe.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/thread.cpp b/src/thread.cpp
index eaf1d09bd..c485697da 100644
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/thread.h b/src/thread.h
index 2368c3069..f97e2b3f8 100644
--- a/src/thread.h
+++ b/src/thread.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/thread_win32_osx.h b/src/thread_win32_osx.h
index fb4b2ec97..5a8d43a2e 100644
--- a/src/thread_win32_osx.h
+++ b/src/thread_win32_osx.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/timeman.cpp b/src/timeman.cpp
index e82a1f6bf..4e98081bc 100644
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/timeman.h b/src/timeman.h
index a2d1a4364..e72cc102a 100644
--- a/src/timeman.h
+++ b/src/timeman.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/tt.cpp b/src/tt.cpp
index d7f7dbdef..ef602809f 100644
--- a/src/tt.cpp
+++ b/src/tt.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/tt.h b/src/tt.h
index 26b63c1ad..38f6c8f4f 100644
--- a/src/tt.h
+++ b/src/tt.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/tune.cpp b/src/tune.cpp
index f53a0eb52..f930c267e 100644
--- a/src/tune.cpp
+++ b/src/tune.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/tune.h b/src/tune.h
index d3c9ebaa3..4ce6e759f 100644
--- a/src/tune.h
+++ b/src/tune.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/types.h b/src/types.h
index 1bb8bd3cc..b5a0498a8 100644
--- a/src/types.h
+++ b/src/types.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/uci.cpp b/src/uci.cpp
index be7de97d7..139d97b60 100644
--- a/src/uci.cpp
+++ b/src/uci.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/uci.h b/src/uci.h
index 1686b3a72..c9b594393 100644
--- a/src/uci.h
+++ b/src/uci.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/ucioption.cpp b/src/ucioption.cpp
index ff6235695..8db796749 100644
--- a/src/ucioption.cpp
+++ b/src/ucioption.cpp
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
diff --git a/src/ucioption.h b/src/ucioption.h
index 0c957fda1..4f6d7541c 100644
--- a/src/ucioption.h
+++ b/src/ucioption.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2026 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by