diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index d846c8d9659..4f6e966a539 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.6.5
+current_version = 1.6.6
 parse = (?P<major>[\d]+) # major version number
 	\.(?P<minor>[\d]+) # minor version number
 	\.(?P<patch>[\d]+) # patch version number
diff --git a/.changes/1.6.6.md b/.changes/1.6.6.md
new file mode 100644
index 00000000000..14f3394d2e2
--- /dev/null
+++ b/.changes/1.6.6.md
@@ -0,0 +1,20 @@
+## dbt-core 1.6.6 - October 11, 2023
+
+### Features
+
+- Support `fill_nulls_with` and `join_to_timespine` for metric nodes ([#8593](https://github.com/dbt-labs/dbt-core/issues/8593))
+
+### Fixes
+
+- Add connection status into list of statuses for dbt debug ([#8350](https://github.com/dbt-labs/dbt-core/issues/8350))
+- Support global flags passed in after subcommands ([#6497](https://github.com/dbt-labs/dbt-core/issues/6497))
+- Regenerate the v10 manifest jsonschema ([#8763](https://github.com/dbt-labs/dbt-core/issues/8763))
+- Foreign key constraint on incremental model results in Database Error ([#8022](https://github.com/dbt-labs/dbt-core/issues/8022))
+- Support docs blocks on versioned model column descriptions ([#8540](https://github.com/dbt-labs/dbt-core/issues/8540))
+- Enable seeds to be handled from stored manifest data ([#6875](https://github.com/dbt-labs/dbt-core/issues/6875))
+- Override path-like args in dbt retry ([#8682](https://github.com/dbt-labs/dbt-core/issues/8682))
+- Group updates on unmodified nodes are handled gracefully for state:modified ([#8371](https://github.com/dbt-labs/dbt-core/issues/8371))
+
+### Under the Hood
+
+- add a test for ephemeral cte injection ([#8225](https://github.com/dbt-labs/dbt-core/issues/8225))
diff --git a/.changes/unreleased/Features-20230922-150754.yaml b/.changes/unreleased/Features-20230922-150754.yaml
deleted file mode 100644
index 6492c3d934a..00000000000
--- a/.changes/unreleased/Features-20230922-150754.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Features
-body: Support `fill_nulls_with` and `join_to_timespine` for metric nodes
-time: 2023-09-22T15:07:54.981752-07:00
-custom:
-  Author: QMalcolm
-  Issue: "8593"
diff --git a/.changes/unreleased/Fixes-20230810-184859.yaml b/.changes/unreleased/Fixes-20230810-184859.yaml
deleted file mode 100644
index 03dcdffa607..00000000000
--- a/.changes/unreleased/Fixes-20230810-184859.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Add connection status into list of statuses for dbt debug
-time: 2023-08-10T18:48:59.221344+01:00
-custom:
-  Author: aranke
-  Issue: "8350"
diff --git a/.changes/unreleased/Fixes-20230919-140514.yaml b/.changes/unreleased/Fixes-20230919-140514.yaml
deleted file mode 100644
index 7990e1fabf8..00000000000
--- a/.changes/unreleased/Fixes-20230919-140514.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Support global flags passed in after subcommands
-time: 2023-09-19T14:05:14.600303+01:00
-custom:
-  Author: aranke
-  Issue: "6497"
diff --git a/.changes/unreleased/Fixes-20231004-075904.yaml b/.changes/unreleased/Fixes-20231004-075904.yaml
deleted file mode 100644
index 544a7f3f332..00000000000
--- a/.changes/unreleased/Fixes-20231004-075904.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Regenerate the v10 manifest jsonschema
-time: 2023-10-04T07:59:04.593928-05:00
-custom:
-  Author: emmyoop
-  Issue: "8763"
diff --git a/.changes/unreleased/Fixes-20231004-144148.yaml b/.changes/unreleased/Fixes-20231004-144148.yaml
deleted file mode 100644
index 9ceeb6c9f3c..00000000000
--- a/.changes/unreleased/Fixes-20231004-144148.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Support docs blocks on versioned model column descriptions
-time: 2023-10-04T14:41:48.843486-05:00
-custom:
-  Author: emmyoop
-  Issue: "8540"
diff --git a/.changes/unreleased/Fixes-20231004-154558.yaml b/.changes/unreleased/Fixes-20231004-154558.yaml
deleted file mode 100644
index 9f26a05f870..00000000000
--- a/.changes/unreleased/Fixes-20231004-154558.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Foreign key constraint on incremental model results in Database Error
-time: 2023-10-04T15:45:58.298548+01:00
-custom:
-  Author: aranke
-  Issue: "8022"
diff --git a/.changes/unreleased/Fixes-20231006-134551.yaml b/.changes/unreleased/Fixes-20231006-134551.yaml
deleted file mode 100644
index 9dea4f6e194..00000000000
--- a/.changes/unreleased/Fixes-20231006-134551.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Enable seeds to be handled from stored manifest data
-time: 2023-10-06T13:45:51.925546-04:00
-custom:
-  Author: michelleark
-  Issue: "6875"
diff --git a/.changes/unreleased/Fixes-20231010-125948.yaml b/.changes/unreleased/Fixes-20231010-125948.yaml
deleted file mode 100644
index ac6d237fe2f..00000000000
--- a/.changes/unreleased/Fixes-20231010-125948.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Group updates on unmodified nodes are handled gracefully for state:modified
-time: 2023-10-10T12:59:48.390113-05:00
-custom:
-  Author: emmyoop
-  Issue: "8371"
diff --git a/.changes/unreleased/Fixes-20231010-182801.yaml b/.changes/unreleased/Fixes-20231010-182801.yaml
deleted file mode 100644
index 50f90b7d746..00000000000
--- a/.changes/unreleased/Fixes-20231010-182801.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Fixes
-body: Override path-like args in dbt retry
-time: 2023-10-10T18:28:01.556443+01:00
-custom:
-  Author: aranke
-  Issue: "8682"
diff --git a/.changes/unreleased/Under the Hood-20230912-230619.yaml b/.changes/unreleased/Under the Hood-20230912-230619.yaml
deleted file mode 100644
index 00239814401..00000000000
--- a/.changes/unreleased/Under the Hood-20230912-230619.yaml	
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Under the Hood
-body: add a test for ephemeral cte injection
-time: 2023-09-12T23:06:19.938207+01:00
-custom:
-  Author: michelleark
-  Issue: "8225"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09aec89a623..50ec07ed6fc 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,14 +5,35 @@
 - "Breaking changes" listed under a version may require action from end users or external maintainers when upgrading to that version.
 - Do not edit this file directly. This file is auto-generated using [changie](https://github.com/miniscruff/changie). For details on how to document a change, see [the contributing guide](https://github.com/dbt-labs/dbt-core/blob/main/CONTRIBUTING.md#adding-changelog-entry)
 
-## dbt-core 1.6.5 - October 02, 2023
+## dbt-core 1.6.6 - October 11, 2023
+
+### Features
+
+- Support `fill_nulls_with` and `join_to_timespine` for metric nodes ([#8593](https://github.com/dbt-labs/dbt-core/issues/8593))
 
 ### Fixes
 
-- Fix tag selection for projects with semantic models ([#8749](https://github.com/dbt-labs/dbt-core/issues/8749))
+- Add connection status into list of statuses for dbt debug ([#8350](https://github.com/dbt-labs/dbt-core/issues/8350))
+- Support global flags passed in after subcommands ([#6497](https://github.com/dbt-labs/dbt-core/issues/6497))
+- Regenerate the v10 manifest jsonschema ([#8763](https://github.com/dbt-labs/dbt-core/issues/8763))
+- Foreign key constraint on incremental model results in Database Error ([#8022](https://github.com/dbt-labs/dbt-core/issues/8022))
+- Support docs blocks on versioned model column descriptions ([#8540](https://github.com/dbt-labs/dbt-core/issues/8540))
+- Enable seeds to be handled from stored manifest data ([#6875](https://github.com/dbt-labs/dbt-core/issues/6875))
+- Override path-like args in dbt retry ([#8682](https://github.com/dbt-labs/dbt-core/issues/8682))
+- Group updates on unmodified nodes are handled gracefully for state:modified ([#8371](https://github.com/dbt-labs/dbt-core/issues/8371))
+
+### Under the Hood
 
+- add a test for ephemeral cte injection ([#8225](https://github.com/dbt-labs/dbt-core/issues/8225))
 
 
+
+## dbt-core 1.6.5 - October 02, 2023
+
+### Fixes
+
+- Fix tag selection for projects with semantic models ([#8749](https://github.com/dbt-labs/dbt-core/issues/8749))
+
 ## dbt-core 1.6.4 - September 28, 2023
 
 ### Features
diff --git a/core/dbt/version.py b/core/dbt/version.py
index 00cf1819ecd..8591454db28 100644
--- a/core/dbt/version.py
+++ b/core/dbt/version.py
@@ -232,5 +232,5 @@ def _get_adapter_plugin_names() -> Iterator[str]:
             yield plugin_name
 
 
-__version__ = "1.6.5"
+__version__ = "1.6.6"
 installed = get_installed_version()
diff --git a/core/setup.py b/core/setup.py
index 547804190e8..2d5f53330a8 100644
--- a/core/setup.py
+++ b/core/setup.py
@@ -25,7 +25,7 @@
 
 
 package_name = "dbt-core"
-package_version = "1.6.5"
+package_version = "1.6.6"
 description = """With dbt, data analysts and engineers can build analytics \
 the way engineers build applications."""
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index e18f9ad89a0..bbed6116446 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -16,12 +16,12 @@ FROM --platform=$build_for python:3.10.7-slim-bullseye as base
 # N.B. The refs updated automagically every release via bumpversion
 # N.B. dbt-postgres is currently found in the core codebase so a value of dbt-core@<some_version> is correct
 
-ARG dbt_core_ref=dbt-core@v1.6.5
-ARG dbt_postgres_ref=dbt-core@v1.6.5
-ARG dbt_redshift_ref=dbt-redshift@v1.6.5
-ARG dbt_bigquery_ref=dbt-bigquery@v1.6.5
-ARG dbt_snowflake_ref=dbt-snowflake@v1.6.5
-ARG dbt_spark_ref=dbt-spark@v1.6.5
+ARG dbt_core_ref=dbt-core@v1.6.6
+ARG dbt_postgres_ref=dbt-core@v1.6.6
+ARG dbt_redshift_ref=dbt-redshift@v1.6.6
+ARG dbt_bigquery_ref=dbt-bigquery@v1.6.6
+ARG dbt_snowflake_ref=dbt-snowflake@v1.6.6
+ARG dbt_spark_ref=dbt-spark@v1.6.6
 # special case args
 ARG dbt_spark_version=all
 ARG dbt_third_party
diff --git a/plugins/postgres/dbt/adapters/postgres/__version__.py b/plugins/postgres/dbt/adapters/postgres/__version__.py
index e46512e4acf..267d3275c7b 100644
--- a/plugins/postgres/dbt/adapters/postgres/__version__.py
+++ b/plugins/postgres/dbt/adapters/postgres/__version__.py
@@ -1 +1 @@
-version = "1.6.5"
+version = "1.6.6"
diff --git a/plugins/postgres/setup.py b/plugins/postgres/setup.py
index 8ba74c082eb..6e7cd207517 100644
--- a/plugins/postgres/setup.py
+++ b/plugins/postgres/setup.py
@@ -41,7 +41,7 @@ def _dbt_psycopg2_name():
 
 
 package_name = "dbt-postgres"
-package_version = "1.6.5"
+package_version = "1.6.6"
 description = """The postgres adapter plugin for dbt (data build tool)"""
 
 this_directory = os.path.abspath(os.path.dirname(__file__))
diff --git a/tests/adapter/dbt/tests/adapter/__version__.py b/tests/adapter/dbt/tests/adapter/__version__.py
index e46512e4acf..267d3275c7b 100644
--- a/tests/adapter/dbt/tests/adapter/__version__.py
+++ b/tests/adapter/dbt/tests/adapter/__version__.py
@@ -1 +1 @@
-version = "1.6.5"
+version = "1.6.6"
diff --git a/tests/adapter/setup.py b/tests/adapter/setup.py
index 5c9fd9e3f8e..e6e826b1c4c 100644
--- a/tests/adapter/setup.py
+++ b/tests/adapter/setup.py
@@ -20,7 +20,7 @@
 
 
 package_name = "dbt-tests-adapter"
-package_version = "1.6.5"
+package_version = "1.6.6"
 description = """The dbt adapter tests for adapter plugins"""
 
 this_directory = os.path.abspath(os.path.dirname(__file__))