diff --git a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
index 6bbd81fae..a1b784fd7 160000
--- a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
+++ b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
@@ -1 +1 @@
-Subproject commit 6bbd81fae499fc2cb566722be1a38a1567bf6e4c
+Subproject commit a1b784fd770e78e1899334d9ce1b46b7e806ecaf