diff --git a/Externals.cfg b/Externals.cfg
index 9b137287..f91f69a5 100644
--- a/Externals.cfg
+++ b/Externals.cfg
@@ -48,7 +48,7 @@ externals = Externals.cfg
 required = True
 repo_url = git@github.com:GEOS-ESM/GEOSgcm_App.git
 local_path = ./src/Applications/@GEOSgcm_App
-tag = v1.0.0
+tag = v1.0.1
 protocol = git
 
 [UMD_Etc]