diff --git a/changelog.d/update-policyengine-bundle-6.6.0.changed.md b/changelog.d/update-policyengine-bundle-6.6.0.changed.md
new file mode 100644
index 000000000..06f5c4800
--- /dev/null
+++ b/changelog.d/update-policyengine-bundle-6.6.0.changed.md
@@ -0,0 +1 @@
+Update the PolicyEngine bundle to 6.6.0.
diff --git a/docker/Dockerfile b/docker/Dockerfile
index b68afdeb0..a930fa1c9 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,4 +1,4 @@
 FROM python:3.12
 # Match the API bundle in pyproject.toml; the bundle updater changes both pins.
 # The models extra pins the complete certified runtime package set.
-RUN pip install "policyengine[models]==6.5.0" ipython
+RUN pip install "policyengine[models]==6.6.0" ipython
diff --git a/pyproject.toml b/pyproject.toml
index 62f3003a3..c05e72726 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
     # versions certified by this PolicyEngine bundle. Cloud Run installs the
     # complete frozen environment from uv.lock; the generic image installs
     # this requirement directly.
-    "policyengine[models]==6.5.0",
+    "policyengine[models]==6.6.0",
     "pydantic",
     "pymysql",
     "python-dotenv",
diff --git a/uv.lock b/uv.lock
index db58cb0ca..893797956 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1,5 +1,5 @@
 version = 1
-revision = 3
+revision = 5
 requires-python = ">=3.11"
 resolution-markers = [
     "python_full_version >= '3.15' and sys_platform == 'win32'",
@@ -2743,7 +2743,7 @@ wheels = [
 
 [[package]]
 name = "policyengine"
-version = "6.5.0"
+version = "6.6.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "h5py" },
@@ -2755,9 +2755,9 @@ dependencies = [
     { name = "pydantic" },
     { name = "requests" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/69/e2/b2aa2aa50efbd0d86a5cff69bd7772d539361dbfb4688fffbc3271915192/policyengine-6.5.0.tar.gz", hash = "sha256:13ead87dd7b1592d31cebb381799d082717713108aaa7569c09625e17ff1c59b", size = 1095330, upload-time = "2026-10-15T16:32:57.227Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/3c/aa/eae06b58a948ba59311c145be181363e67e28d8ecbbd06aacc2e542c1fc7/policyengine-6.6.0.tar.gz", hash = "sha256:3651d7512e9f77e94da59ef379433762542f993931769de5b8f022712a6bcd17", size = 1376433, upload-time = "2026-10-16T19:15:45.723Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/16/1a/adb0fe94e1e8a63e15c322d208b838c0028fd260827cc1a1d2b0ea2cf87a/policyengine-6.5.0-py3-none-any.whl", hash = "sha256:312a04f7ceb7058aa803d012ed836a8fdd0ed4885dea46112f5c205a42193856", size = 406203, upload-time = "2026-10-15T16:32:54.945Z" },
+    { url = "https://files.pythonhosted.org/packages/ff/a3/0935d7f9e4bbe7bcd369390e4139dce67138f27420a2a05196ddacfc6624/policyengine-6.6.0-py3-none-any.whl", hash = "sha256:1a4aac69e216f98780b808c01e1cf511d891fbc171abb42a1e63c2a4f4e5b42a", size = 488730, upload-time = "2026-10-16T19:15:43.651Z" },
 ]
 
 [package.optional-dependencies]
@@ -2845,7 +2845,7 @@ requires-dist = [
     { name = "mypy", marker = "extra == 'dev'", specifier = ">=1.15,<2" },
     { name = "openai" },
     { name = "packaging", specifier = ">=24,<27" },
-    { name = "policyengine", extras = ["models"], specifier = "==6.5.0" },
+    { name = "policyengine", extras = ["models"], specifier = "==6.6.0" },
     { name = "policyengine-canada", specifier = "==0.96.3" },
     { name = "policyengine-il", specifier = "==0.1.0" },
     { name = "policyengine-ng", specifier = "==0.5.1" },