diff --git a/io/post_nems_routines.F90 b/io/post_nems_routines.F90
index 2c61c65e6..9edf4365a 100644
--- a/io/post_nems_routines.F90
+++ b/io/post_nems_routines.F90
@@ -226,6 +226,7 @@ subroutine read_postnmlt(kpo,kth,kpv,po,th,pv,post_namelist)
                              lsmdef,ALSL,me,d3d_on,gocart_on,hyb_sigp,&
                              pthresh,novegtype,ivegsrc,icu_physics,   &
                              isf_surface_physics,modelname,submodelname
+      use upp_ifi_mod, only: write_ifi_debug_files
 !
 !    revision history:
 !    Jul 2019 Jun Wang: read post namelist
@@ -241,7 +242,7 @@ subroutine read_postnmlt(kpo,kth,kpv,po,th,pv,post_namelist)
       integer l,k
 
       namelist/nampgb/kpo,po,kth,th,kpv,pv,popascal,d3d_on,gocart_on,  &
-                      hyb_sigp
+                      hyb_sigp,write_ifi_debug_files
       namelist/model_inputs/modelname,submodelname
 !---------------------------------------------------------------------
 !
diff --git a/upp b/upp
index b37f8ab7b..a74d1c1d0 160000
--- a/upp
+++ b/upp
@@ -1 +1 @@
-Subproject commit b37f8ab7b0f298346d79a37e0c5d4a64037fd4d4
+Subproject commit a74d1c1d0a5e5e40001545312de7aac00e2be2de