diff --git a/nibabies/workflows/base.py b/nibabies/workflows/base.py
index 383186c7..e8624091 100644
--- a/nibabies/workflows/base.py
+++ b/nibabies/workflows/base.py
@@ -373,6 +373,7 @@ def init_single_subject_wf(
             anat_only=config.workflow.anat_only,
             anat_derivatives=anatomical_cache or None,
             subject_id=subject_id,
+            require_t1w=False,
         ),
         name='bidssrc',
     )
diff --git a/pyproject.toml b/pyproject.toml
index 75625b9d..e4db5b78 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ dependencies = [
     "nireports >= 23.2.0",
     "nitime",
     "nitransforms >= 24.1.1",
-    "niworkflows >= 1.12.1",
+    "niworkflows >= 1.12.2",
     "numpy >= 1.21.0",
     "packaging",
     "pandas",