diff --git a/src/prefect/cli/deploy.py b/src/prefect/cli/deploy.py
index 6c0426996096..bfa1cc051f42 100644
--- a/src/prefect/cli/deploy.py
+++ b/src/prefect/cli/deploy.py
@@ -774,13 +774,14 @@ async def _run_single_deploy(
         tags=deploy_config.get("tags"),
         concurrency_limit=deploy_config.get("concurrency_limit"),
         concurrency_options=deploy_config.get("concurrency_options"),
-        parameter_openapi_schema=deploy_config.get("parameter_openapi_schema"),
         schedules=deploy_config.get("schedules"),
         paused=deploy_config.get("paused"),
         storage=_PullStepStorage(pull_steps),
         job_variables=get_from_dict(deploy_config, "work_pool.job_variables"),
     )
 
+    deployment._parameter_openapi_schema = deploy_config["parameter_openapi_schema"]
+
     if deploy_config.get("enforce_parameter_schema") is not None:
         deployment.enforce_parameter_schema = deploy_config.get(
             "enforce_parameter_schema"
diff --git a/tests/cli/test_deploy.py b/tests/cli/test_deploy.py
index 556f11077f48..988820ca5e6e 100644
--- a/tests/cli/test_deploy.py
+++ b/tests/cli/test_deploy.py
@@ -2363,6 +2363,8 @@ async def test_deploy_update_does_not_override_enforce_parameter_schema(
             "An important name/test-name"
         )
         assert not deployment.enforce_parameter_schema
+        assert deployment.parameter_openapi_schema
+        parameter_openapi_schema = deployment.parameter_openapi_schema
 
         prefect_yaml_file = Path("prefect.yaml")
         with prefect_yaml_file.open(mode="r") as f:
@@ -2390,6 +2392,7 @@ async def test_deploy_update_does_not_override_enforce_parameter_schema(
             "An important name/test-name"
         )
         assert not deployment.enforce_parameter_schema
+        assert deployment.parameter_openapi_schema == parameter_openapi_schema
 
 
 class TestSchedules: