diff --git a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
index 66fb61ab1..b0bc778d7 160000
--- a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
+++ b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
@@ -1 +1 @@
-Subproject commit 66fb61ab1febc2503fcc149ea570a255e2ebf94c
+Subproject commit b0bc778d70439c7677230e61148249ecf946b6ab