diff --git a/changelog.d/update-policyengine-uk-2.88.12.changed.md b/changelog.d/update-policyengine-uk-2.88.12.changed.md
new file mode 100644
index 000000000..ab23d9b31
--- /dev/null
+++ b/changelog.d/update-policyengine-uk-2.88.12.changed.md
@@ -0,0 +1 @@
+Update PolicyEngine UK to 2.88.12.
diff --git a/pyproject.toml b/pyproject.toml
index 647a8c07b..9625a7b43 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -39,7 +39,7 @@ dependencies = [
     "policyengine_canada==0.96.3",
     "policyengine-ng==0.5.1",
     "policyengine-il==0.1.0",
-    "policyengine_uk==2.88.0",
+    "policyengine_uk==2.88.12",
     "policyengine_us==1.653.3",
     "policyengine_core>=3.23.5",
     "policyengine>0.12.0,<1",