diff --git a/unchanged/diagnostics_latest.yaml b/unchanged/diagnostics_latest.yaml
index 3cf803f..dea6583 100644
--- a/unchanged/diagnostics_latest.yaml
+++ b/unchanged/diagnostics_latest.yaml
@@ -780,6 +780,12 @@ FESEDFLUX :
    vertical_grid : layer_avg
    frequency : never
    operator : average
+DOCFLUIDYR :
+   longname : DOC fluid flux
+   units : 1/s
+   vertical_grid : layer_avg
+   frequency : never
+   operator : average
 
 # Particulate 2D diags
 POC_FLUX_((particulate_flux_ref_depth_str)) :