diff --git a/.bumpversion.cfg b/.bumpversion.cfg
index 5e1e8e8fd7e..5975d1a6a83 100644
--- a/.bumpversion.cfg
+++ b/.bumpversion.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 1.5.10
+current_version = 1.5.11
 parse = (?P<major>[\d]+) # major version number
 	\.(?P<minor>[\d]+) # minor version number
 	\.(?P<patch>[\d]+) # patch version number
diff --git a/.changes/1.5.11.md b/.changes/1.5.11.md
new file mode 100644
index 00000000000..7f0e311077a
--- /dev/null
+++ b/.changes/1.5.11.md
@@ -0,0 +1,5 @@
+## dbt-core 1.5.11 - March 28, 2024
+
+### Dependencies
+
+- Restrict protobuf to 4.* versions ([#9566](https://github.com/dbt-labs/dbt-core/pull/9566))
diff --git a/.changes/unreleased/Dependencies-20240222-102947.yaml b/.changes/unreleased/Dependencies-20240222-102947.yaml
deleted file mode 100644
index 9c21d51e21e..00000000000
--- a/.changes/unreleased/Dependencies-20240222-102947.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-kind: Dependencies
-body: Restrict protobuf to 4.* versions
-time: 2024-02-22T10:29:47.595435-08:00
-custom:
-  Author: QMalcolm
-  PR: "9566"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e6e8f2d494c..190a35ca2df 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,14 @@
 - "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 1.5.11 - March 28, 2024
+
+### Dependencies
+
+- Restrict protobuf to 4.* versions ([#9566](https://github.com/dbt-labs/dbt-core/pull/9566))
+
+
+
 ## dbt-core 1.5.10 - February 28, 2024
 
 ### Under the Hood
@@ -15,8 +23,6 @@
 
 - Update Jinja2 to >= 3.1.3 to address CVE-2024-22195 ([#CVE-2024-22195](https://github.com/dbt-labs/dbt-core/pull/CVE-2024-22195))
 
-
-
 ## dbt-core 1.5.9 - October 31, 2023
 
 ### Fixes
diff --git a/core/dbt/version.py b/core/dbt/version.py
index ce6d25a71c5..7e1287df3a7 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__ = "1.5.10"
+__version__ = "1.5.11"
 installed = get_installed_version()
diff --git a/core/setup.py b/core/setup.py
index 2302927032a..1adb5f67b64 100644
--- a/core/setup.py
+++ b/core/setup.py
@@ -25,7 +25,7 @@
 
 
 package_name = "dbt-core"
-package_version = "1.5.10"
+package_version = "1.5.11"
 description = """With dbt, data analysts and engineers can build analytics \
 the way engineers build applications."""
 
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 0de9f574bef..86a230a15a1 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@v1.5.10
-ARG dbt_postgres_ref=dbt-core@v1.5.10
-ARG dbt_redshift_ref=dbt-redshift@v1.5.10
-ARG dbt_bigquery_ref=dbt-bigquery@v1.5.10
-ARG dbt_snowflake_ref=dbt-snowflake@v1.5.10
-ARG dbt_spark_ref=dbt-spark@v1.5.10
+ARG dbt_core_ref=dbt-core@v1.5.11
+ARG dbt_postgres_ref=dbt-core@v1.5.11
+ARG dbt_redshift_ref=dbt-redshift@v1.5.11
+ARG dbt_bigquery_ref=dbt-bigquery@v1.5.11
+ARG dbt_snowflake_ref=dbt-snowflake@v1.5.11
+ARG dbt_spark_ref=dbt-spark@v1.5.11
 # 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 f6dc04ed59d..bb8035558fb 100644
--- a/plugins/postgres/dbt/adapters/postgres/__version__.py
+++ b/plugins/postgres/dbt/adapters/postgres/__version__.py
@@ -1 +1 @@
-version = "1.5.10"
+version = "1.5.11"
diff --git a/plugins/postgres/setup.py b/plugins/postgres/setup.py
index f398dc1e4ac..3026fe991d4 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 = "1.5.10"
+package_version = "1.5.11"
 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 f6dc04ed59d..bb8035558fb 100644
--- a/tests/adapter/dbt/tests/adapter/__version__.py
+++ b/tests/adapter/dbt/tests/adapter/__version__.py
@@ -1 +1 @@
-version = "1.5.10"
+version = "1.5.11"
diff --git a/tests/adapter/setup.py b/tests/adapter/setup.py
index dab41198948..3bb79251554 100644
--- a/tests/adapter/setup.py
+++ b/tests/adapter/setup.py
@@ -20,7 +20,7 @@
 
 
 package_name = "dbt-tests-adapter"
-package_version = "1.5.10"
+package_version = "1.5.11"
 description = """The dbt adapter tests for adapter plugins"""
 
 this_directory = os.path.abspath(os.path.dirname(__file__))