diff --git a/.buildkite/dagster-buildkite/dagster_buildkite/steps/packages.py b/.buildkite/dagster-buildkite/dagster_buildkite/steps/packages.py
index 192a00352221c..4607c53adf53a 100644
--- a/.buildkite/dagster-buildkite/dagster_buildkite/steps/packages.py
+++ b/.buildkite/dagster-buildkite/dagster_buildkite/steps/packages.py
@@ -550,7 +550,7 @@ def tox_factors_for_folder(tests_folder_name: str) -> List[str]:
         "python_modules/libraries/dagster-dbt",
         pytest_tox_factors=[
             f"{deps_factor}-{command_factor}"
-            for deps_factor in ["dbt17", "dbt18"]
+            for deps_factor in ["dbt17", "dbt18", "dbt19"]
             for command_factor in ["cloud", "core-main", "core-derived-metadata"]
         ],
     ),
diff --git a/python_modules/libraries/dagster-dbt/dagster_dbt/utils.py b/python_modules/libraries/dagster-dbt/dagster_dbt/utils.py
index 490a8b813dd95..a94a3c77fd51d 100644
--- a/python_modules/libraries/dagster-dbt/dagster_dbt/utils.py
+++ b/python_modules/libraries/dagster-dbt/dagster_dbt/utils.py
@@ -51,7 +51,7 @@ def __getattr__(self, item):
             {
                 "unit_tests": {
                     # unit test nodes must be of type UnitTestDefinition
-                    unique_id: UnitTestDefinition(**info)
+                    unique_id: UnitTestDefinition.from_dict(info)
                     for unique_id, info in manifest_json["unit_tests"].items()
                 },
             }
diff --git a/python_modules/libraries/dagster-dbt/tox.ini b/python_modules/libraries/dagster-dbt/tox.ini
index 8588f844ba0e2..39c92eb5dec3c 100644
--- a/python_modules/libraries/dagster-dbt/tox.ini
+++ b/python_modules/libraries/dagster-dbt/tox.ini
@@ -26,6 +26,10 @@ deps =
   dbt18: dbt-duckdb==1.8.*
   dbt18: dbt-snowflake==1.8.*
   dbt18: dbt-bigquery==1.8.*
+  dbt19: dbt-core==1.9.*
+  dbt19: dbt-duckdb==1.9.*
+  dbt19: dbt-snowflake==1.9.*
+  dbt19: dbt-bigquery==1.9.*
   -e .[test]
 allowlist_externals =
   /bin/bash