diff --git a/LICENSE.txt b/LICENSE.txt
index f443b2f..bca09c5 100644
--- a/LICENSE.txt
+++ b/LICENSE.txt
@@ -1,4 +1,4 @@
-Copyright (c) 2023 Yegor Bugayenko
+Copyright (c) 2023-2024 Yegor Bugayenko
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/benches/insert.rs b/benches/insert.rs
index 9598c37..269950d 100644
--- a/benches/insert.rs
+++ b/benches/insert.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/benches/len.rs b/benches/len.rs
index 591e26a..f848e42 100644
--- a/benches/len.rs
+++ b/benches/len.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/clone.rs b/src/clone.rs
index eac8965..6eefc7e 100644
--- a/src/clone.rs
+++ b/src/clone.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/ctors.rs b/src/ctors.rs
index 21afa57..0a426d1 100644
--- a/src/ctors.rs
+++ b/src/ctors.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/debug.rs b/src/debug.rs
index 51b2f6d..3c50131 100644
--- a/src/debug.rs
+++ b/src/debug.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/display.rs b/src/display.rs
index 4cb14c3..9d64497 100644
--- a/src/display.rs
+++ b/src/display.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/eq.rs b/src/eq.rs
index 5d331b8..fdf7b5b 100644
--- a/src/eq.rs
+++ b/src/eq.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/from.rs b/src/from.rs
index 0d44ed8..bfa400f 100644
--- a/src/from.rs
+++ b/src/from.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/index.rs b/src/index.rs
index 7468c4d..8ec92af 100644
--- a/src/index.rs
+++ b/src/index.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/iterators.rs b/src/iterators.rs
index a51dca9..f92cf3d 100644
--- a/src/iterators.rs
+++ b/src/iterators.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/keys.rs b/src/keys.rs
index c9eb3dc..c0e2613 100644
--- a/src/keys.rs
+++ b/src/keys.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/lib.rs b/src/lib.rs
index 9bcada2..a10e4f3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/map.rs b/src/map.rs
index 25fc8b4..4549b90 100644
--- a/src/map.rs
+++ b/src/map.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/serialization.rs b/src/serialization.rs
index fcd6471..b223779 100644
--- a/src/serialization.rs
+++ b/src/serialization.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/clone.rs b/src/set/clone.rs
index aa21a12..f15875c 100644
--- a/src/set/clone.rs
+++ b/src/set/clone.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/ctors.rs b/src/set/ctors.rs
index 877c719..4d99a67 100644
--- a/src/set/ctors.rs
+++ b/src/set/ctors.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/debug.rs b/src/set/debug.rs
index 6350d76..d50b892 100644
--- a/src/set/debug.rs
+++ b/src/set/debug.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/display.rs b/src/set/display.rs
index 9101fe5..addfbdb 100644
--- a/src/set/display.rs
+++ b/src/set/display.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/eq.rs b/src/set/eq.rs
index 2e5fb68..088bffe 100644
--- a/src/set/eq.rs
+++ b/src/set/eq.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/from.rs b/src/set/from.rs
index 958fef5..0240a1c 100644
--- a/src/set/from.rs
+++ b/src/set/from.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/functions.rs b/src/set/functions.rs
index 3a60632..157143c 100644
--- a/src/set/functions.rs
+++ b/src/set/functions.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/iterators.rs b/src/set/iterators.rs
index 3849ab0..a93a30b 100644
--- a/src/set/iterators.rs
+++ b/src/set/iterators.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/set/serialization.rs b/src/set/serialization.rs
index 5904121..fd0d87b 100644
--- a/src/set/serialization.rs
+++ b/src/set/serialization.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/src/values.rs b/src/values.rs
index ccf4215..80dd3a5 100644
--- a/src/values.rs
+++ b/src/values.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal
diff --git a/tests/benchmark.rs b/tests/benchmark.rs
index 5d9b925..b459e80 100644
--- a/tests/benchmark.rs
+++ b/tests/benchmark.rs
@@ -1,4 +1,4 @@
-// Copyright (c) 2023 Yegor Bugayenko
+// Copyright (c) 2023-2024 Yegor Bugayenko
 //
 // Permission is hereby granted, free of charge, to any person obtaining a copy
 // of this software and associated documentation files (the "Software"), to deal