diff --git a/.circleci/config.yml b/.circleci/config.yml
index f14b053626..baaf23f283 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -214,6 +214,7 @@ workflows:
   test:
     jobs:
       - build
+      #Temporarily disabled due avoid compiling numpy on 32bit
       - build-32
 
 
diff --git a/c/tests/test_minimal_cpp.cpp b/c/tests/test_minimal_cpp.cpp
index 8754f4f636..8e9296f410 100644
--- a/c/tests/test_minimal_cpp.cpp
+++ b/c/tests/test_minimal_cpp.cpp
@@ -1,6 +1,6 @@
 /* * MIT License
  *
- * Copyright (c) 2019-2023 Tskit Developers
+ * Copyright (c) 2019-2024 Tskit Developers
  *
  * 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/c/tskit.h b/c/tskit.h
index e55ffc664a..e8f1b69f60 100644
--- a/c/tskit.h
+++ b/c/tskit.h
@@ -1,7 +1,7 @@
 /*
  * MIT License
  *
- * Copyright (c) 2019 Tskit Developers
+ * Copyright (c) 2019-2024 Tskit Developers
  *
  * 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/python/tests/ibd.py b/python/tests/ibd.py
index 53e28cc5c0..64f1e8be63 100644
--- a/python/tests/ibd.py
+++ b/python/tests/ibd.py
@@ -1,6 +1,6 @@
 # MIT License
 #
-# Copyright (c) 2020-2022 Tskit Developers
+# Copyright (c) 2020-2024 Tskit Developers
 #
 # 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/python/tests/test_haplotype_matching.py b/python/tests/test_haplotype_matching.py
index dc01e8370d..4c7d5fc18a 100644
--- a/python/tests/test_haplotype_matching.py
+++ b/python/tests/test_haplotype_matching.py
@@ -1,6 +1,6 @@
 # MIT License
 #
-# Copyright (c) 2019-2023 Tskit Developers
+# Copyright (c) 2019-2024 Tskit Developers
 #
 # 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/python/tests/test_metadata.py b/python/tests/test_metadata.py
index d57e6ea9d3..b6c2ed664b 100644
--- a/python/tests/test_metadata.py
+++ b/python/tests/test_metadata.py
@@ -1,6 +1,6 @@
 # MIT License
 #
-# Copyright (c) 2018-2022 Tskit Developers
+# Copyright (c) 2018-2024 Tskit Developers
 # Copyright (c) 2017 University of Oxford
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy