diff --git a/pytket/package.md b/pytket/package.md
index 5bd7ee3317..1d253af59c 100644
--- a/pytket/package.md
+++ b/pytket/package.md
@@ -35,7 +35,7 @@ For worked examples using TKET see our [notebook examples](https://tket.quantinu
 
 For bugs and feature requests we recommend creating an issue on the [github repository](https://github.com/CQCL/tket).
 
-User support: tket-support@cambridgequantum.com
+User support: tket-support@quantinuum.com
 
 For discussion, join the public slack channel [here](https://join.slack.com/t/tketusers/shared_invite/zt-18qmsamj9-UqQFVdkRzxnXCcKtcarLRA).
 
diff --git a/pytket/setup.py b/pytket/setup.py
index a99ff83bd0..243e3c43fe 100755
--- a/pytket/setup.py
+++ b/pytket/setup.py
@@ -177,7 +177,7 @@ def finalize_options(self):
 setup(
     name="pytket",
     author="TKET development team",
-    author_email="tket-support@cambridgequantum.com",
+    author_email="tket-support@quantinuum.com",
     python_requires=">=3.10",
     project_urls={
         "Documentation": "https://tket.quantinuum.com/api-docs/index.html",