diff --git a/changelog.d/update-policyengine-uk-2.88.40.changed.md b/changelog.d/update-policyengine-uk-2.88.40.changed.md
new file mode 100644
index 000000000..ba3701b4e
--- /dev/null
+++ b/changelog.d/update-policyengine-uk-2.88.40.changed.md
@@ -0,0 +1 @@
+Update PolicyEngine UK to 2.88.40.
diff --git a/pyproject.toml b/pyproject.toml
index f14bc1b11..ef0879633 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,7 +41,7 @@ dependencies = [
     "policyengine_canada==0.96.3",
     "policyengine-ng==0.5.1",
     "policyengine-il==0.1.0",
-    "policyengine_uk==2.88.20",
+    "policyengine_uk==2.88.40",
     "policyengine_us==1.715.2",
     "policyengine_core>=3.23.5",
     "policyengine>0.12.0,<1",