diff --git a/docs/sections/user_guide/cli/tools/rocoto/rocoto.yaml b/docs/sections/user_guide/cli/tools/rocoto/rocoto.yaml
index eac2c7fa5..41614a40d 100644
--- a/docs/sections/user_guide/cli/tools/rocoto/rocoto.yaml
+++ b/docs/sections/user_guide/cli/tools/rocoto/rocoto.yaml
@@ -17,6 +17,7 @@ workflow:
       account: "&ACCOUNT;"
       command: "echo hello $person"
       jobname: hello
+      native: --reservation my_reservation
       nodes: 1:ppn=1
       walltime: 00:01:00
       envars:
diff --git a/recipe/meta.json b/recipe/meta.json
index 05052a59a..5b52efd27 100644
--- a/recipe/meta.json
+++ b/recipe/meta.json
@@ -32,5 +32,5 @@
       "pyyaml =6.0.*"
     ]
   },
-  "version": "2.3.2"
+  "version": "2.3.3"
 }
diff --git a/src/uwtools/drivers/mpas.py b/src/uwtools/drivers/mpas.py
index 0fb9988cb..b752f7841 100644
--- a/src/uwtools/drivers/mpas.py
+++ b/src/uwtools/drivers/mpas.py
@@ -48,7 +48,7 @@ def namelist_file(self):
         yield asset(path, path.is_file)
         yield None
         duration = timedelta(hours=self._driver_config["length"])
-        str_duration = str(duration).replace(" days, ", "")
+        str_duration = str(duration).replace(" days, ", "_")
         try:
             namelist = self._driver_config["namelist"]
         except KeyError as e:
diff --git a/src/uwtools/resources/info.json b/src/uwtools/resources/info.json
index c5a6a6831..456c6a2e9 100644
--- a/src/uwtools/resources/info.json
+++ b/src/uwtools/resources/info.json
@@ -1,4 +1,4 @@
 {
-  "version": "2.3.2",
+  "version": "2.3.3",
   "buildnum": "0"
 }
diff --git a/src/uwtools/resources/jsonschema/rocoto.jsonschema b/src/uwtools/resources/jsonschema/rocoto.jsonschema
index fded4633c..1b3bcbf0f 100644
--- a/src/uwtools/resources/jsonschema/rocoto.jsonschema
+++ b/src/uwtools/resources/jsonschema/rocoto.jsonschema
@@ -290,6 +290,23 @@
     },
     "task": {
       "additionalProperties": false,
+      "anyOf": [
+        {
+          "required": [
+            "cores"
+          ]
+        },
+        {
+          "required": [
+            "native"
+          ]
+        },
+        {
+          "required": [
+            "nodes"
+          ]
+        }
+      ],
       "dependentSchemas": {
         "exclusive": {
           "not": {
@@ -328,23 +345,6 @@
           ]
         }
       },
-      "oneOf": [
-        {
-          "required": [
-            "cores"
-          ]
-        },
-        {
-          "required": [
-            "native"
-          ]
-        },
-        {
-          "required": [
-            "nodes"
-          ]
-        }
-      ],
       "properties": {
         "account": {
           "type": "string"
diff --git a/src/uwtools/tests/drivers/test_mpas.py b/src/uwtools/tests/drivers/test_mpas.py
index 257a352ba..172b4b943 100644
--- a/src/uwtools/tests/drivers/test_mpas.py
+++ b/src/uwtools/tests/drivers/test_mpas.py
@@ -135,7 +135,22 @@ def test_MPAS_namelist_file(caplog, driverobj):
     path = Path(refs(driverobj.namelist_file()))
     assert dst.is_file()
     assert logged(caplog, f"Wrote config to {path}")
-    assert isinstance(f90nml.read(dst), f90nml.Namelist)
+    nml = f90nml.read(dst)
+    assert isinstance(nml, f90nml.Namelist)
+
+
+def test_MPAS_namelist_file_long_duration(caplog, config, cycle):
+    log.setLevel(logging.DEBUG)
+    config["mpas"]["length"] = 120
+    driverobj = mpas.MPAS(config=config, cycle=cycle)
+    dst = driverobj._rundir / "namelist.atmosphere"
+    assert not dst.is_file()
+    path = Path(refs(driverobj.namelist_file()))
+    assert dst.is_file()
+    assert logged(caplog, f"Wrote config to {path}")
+    nml = f90nml.read(dst)
+    assert isinstance(nml, f90nml.Namelist)
+    assert nml["nhyd_model"]["config_run_duration"] == "5_0:00:00"
 
 
 def test_MPAS_namelist_file_fails_validation(caplog, driverobj):
diff --git a/src/uwtools/tests/fixtures/hello_workflow.yaml b/src/uwtools/tests/fixtures/hello_workflow.yaml
index b7d524ae5..be9a10607 100644
--- a/src/uwtools/tests/fixtures/hello_workflow.yaml
+++ b/src/uwtools/tests/fixtures/hello_workflow.yaml
@@ -23,6 +23,7 @@ workflow:
           attrs:
             offset: 01:00
           value: hello-@Y@m@d@H
+      native: --reservation my_reservation
       nodes: 1:ppn=1
       walltime: 00:01:00
       envars:
diff --git a/src/uwtools/tests/test_schemas.py b/src/uwtools/tests/test_schemas.py
index eb1158815..2e425dab8 100644
--- a/src/uwtools/tests/test_schemas.py
+++ b/src/uwtools/tests/test_schemas.py
@@ -1021,6 +1021,18 @@ def test_schema_rocoto_workflow_cycledef():
     assert "'foo' is not valid" in errors([{"attrs": {"activation_offset": "foo"}, "spec": spec}])
 
 
+def test_schema_rocoto_task_resources():
+    errors = schema_validator("rocoto", "$defs", "task", "properties")
+    # Basic resource options
+    assert not errors([{"cores": 1}])
+    assert not errors([{"native": "abc"}])
+    assert not errors([{"native": {"cyclestr": {"value": "def"}}}])
+    assert not errors([{"nodes": "1:ppn=12"}])
+    # Combined valid resources
+    assert not errors([{"cores": 1, "native": "abc"}])
+    assert not errors([{"native": "abc", "nodes": "1:ppn=12"}])
+
+
 # sfc-climo-gen