diff --git a/dbt-tests-adapter/pyproject.toml b/dbt-tests-adapter/pyproject.toml
index 35722b7b..20342078 100644
--- a/dbt-tests-adapter/pyproject.toml
+++ b/dbt-tests-adapter/pyproject.toml
@@ -25,7 +25,7 @@ classifiers = [
 ]
 dependencies = [
     # TODO: remove `dbt-core` dependency
-    "dbt-core>=1.8.0a1,<1.9.0",
+    "dbt-core>=1.8.0a1",
     # `dbt-tests-adapter` will ultimately depend on the packages below
     # `dbt-tests-adapter` temporarily uses `dbt-core` for a dbt runner
     # `dbt-core` takes the packages below as dependencies, so they are unpinned to avoid conflicts