diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 465823d..55fcb98 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -162,4 +162,4 @@ jobs:
     steps:
     - name: Deploy to GitHub Pages
       id: deployment
-      uses: actions/deploy-pages@v4.0.4
+      uses: actions/deploy-pages@v4.0.5
diff --git a/_metadata.py b/_metadata.py
index 6cb1a31..279e458 100644
--- a/_metadata.py
+++ b/_metadata.py
@@ -1,2 +1,2 @@
-__extension_version__ = "0.12.0"
+__extension_version__ = "0.13.0"
 __extension_name__ = "pytket-iqm"
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 3a8819b..2e88c7c 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -1,6 +1,11 @@
 Changelog
 ~~~~~~~~~
 
+0.13.0 (April 2024)
+-------------------
+
+* Updated pytket version requirement to 1.27.
+
 0.12.0 (March 2024)
 -------------------
 
diff --git a/pytket/extensions/iqm/__init__.py b/pytket/extensions/iqm/__init__.py
index 54680c5..15f66f5 100644
--- a/pytket/extensions/iqm/__init__.py
+++ b/pytket/extensions/iqm/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/pytket/extensions/iqm/backends/__init__.py b/pytket/extensions/iqm/backends/__init__.py
index dd4f0b5..b38ad14 100644
--- a/pytket/extensions/iqm/backends/__init__.py
+++ b/pytket/extensions/iqm/backends/__init__.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/pytket/extensions/iqm/backends/config.py b/pytket/extensions/iqm/backends/config.py
index 5525255..c3fcb75 100644
--- a/pytket/extensions/iqm/backends/config.py
+++ b/pytket/extensions/iqm/backends/config.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/pytket/extensions/iqm/backends/iqm.py b/pytket/extensions/iqm/backends/iqm.py
index e741220..dcb444f 100644
--- a/pytket/extensions/iqm/backends/iqm.py
+++ b/pytket/extensions/iqm/backends/iqm.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/setup.py b/setup.py
index f96e276..eb444ab 100644
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -42,7 +42,7 @@
     license="Apache 2",
     packages=find_namespace_packages(include=["pytket.*"]),
     include_package_data=True,
-    install_requires=["pytket ~= 1.26", "iqm-client ~= 15.2"],
+    install_requires=["pytket ~= 1.27", "iqm-client ~= 15.2"],
     classifiers=[
         "Environment :: Console",
         "Programming Language :: Python :: 3.10",
diff --git a/tests/backend_test.py b/tests/backend_test.py
index f839b5a..f7de2d0 100644
--- a/tests/backend_test.py
+++ b/tests/backend_test.py
@@ -1,4 +1,4 @@
-# Copyright 2019-2024 Cambridge Quantum Computing
+# Copyright 2019-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/conftest.py b/tests/conftest.py
index b75f9b6..3060f19 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
diff --git a/tests/convert_test.py b/tests/convert_test.py
index 8715b9d..8f60078 100644
--- a/tests/convert_test.py
+++ b/tests/convert_test.py
@@ -1,4 +1,4 @@
-# Copyright 2020-2024 Cambridge Quantum Computing
+# Copyright 2020-2024 Quantinuum
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.