diff --git a/Externals.cfg b/Externals.cfg
index 3b49a045..0e287953 100644
--- a/Externals.cfg
+++ b/Externals.cfg
@@ -32,7 +32,7 @@ protocol = git
 required = True
 repo_url = git@github.com:GEOS-ESM/GEOSgcm_GridComp.git
 local_path = ./src/Components/GEOSldas_GridComp/@GEOSgcm_GridComp
-tag = v1.8.7
+tag = v1.9.0
 protocol = git
 sparse = ../../../../config/GEOSgcm_GridComp_ldas.sparse
 
diff --git a/components.yaml b/components.yaml
index d67288d6..3a5879b7 100644
--- a/components.yaml
+++ b/components.yaml
@@ -28,6 +28,6 @@ GEOSgcm_GridComp:
   local: ./src/Components/GEOSldas_GridComp/@GEOSgcm_GridComp
   remote: git@github.com:GEOS-ESM/GEOSgcm_GridComp.git
   sparse: ./config/GEOSgcm_GridComp_ldas.sparse
-  tag: v1.8.7
+  tag: v1.9.0