diff --git a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
index ac0b765c6..ab77f5279 160000
--- a/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
+++ b/src/GCHP_GridComp/GEOSChem_GridComp/geos-chem
@@ -1 +1 @@
-Subproject commit ac0b765c60c723b51a07dd37e2b0a7abe9b43cbd
+Subproject commit ab77f52792a3bdcb9f9f69556d93105e032da36f