diff --git a/nibabies/interfaces/reports.py b/nibabies/interfaces/reports.py
index d7e351c4..c0e0c8a3 100644
--- a/nibabies/interfaces/reports.py
+++ b/nibabies/interfaces/reports.py
@@ -28,6 +28,7 @@
 \t<ul class="elem-desc">
 \t\t<li>Subject ID: {subject_id}</li>
 \t\t<li>Session ID: {session_id}</li>
+\t\t<li>Chronological age (months): {age}</li>
 \t\t<li>Structural images: {num_t1w} T1-weighted, {num_t2w} T2-weighted</li>
 \t\t<li>Anatomical reference space: {anat_ref}<li>
 \t\t<li>Functional series: {n_bold:d}</li>
@@ -104,6 +105,7 @@ class SubjectSummaryInputSpec(BaseInterfaceInputSpec):
         'mcribs',
         desc='surface reconstruction method',
     )
+    age = traits.Int(desc='Chronological age in months at the time of session')
 
 
 class SubjectSummaryOutputSpec(SummaryOutputSpec):
@@ -204,6 +206,7 @@ def _generate_segment(self):
         return SUBJECT_TEMPLATE.format(
             subject_id=self.inputs.subject_id,
             session_id=self.inputs.session_id,
+            age=self.inputs.age,
             num_t1w=num_t1w,
             num_t2w=num_t2w,
             anat_ref=self.inputs.anatomical_reference,
diff --git a/nibabies/workflows/base.py b/nibabies/workflows/base.py
index 2742ee00..08ef9c4f 100644
--- a/nibabies/workflows/base.py
+++ b/nibabies/workflows/base.py
@@ -381,6 +381,7 @@ def init_single_subject_wf(
             recon_method=recon_method,
             std_spaces=spaces.get_spaces(nonstandard=False),
             nstd_spaces=spaces.get_spaces(standard=False),
+            age=age,
         ),
         name='summary',
         run_without_submitting=True,