diff --git a/.gitmodules b/.gitmodules
index 78c604aa6f..c57c1a8235 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -144,7 +144,7 @@ fxDONOTUSEurl = https://github.com/ESCOMP/mizuRoute
 [submodule "ccs_config"]
 path = ccs_config
 url = https://github.com/ESMCI/ccs_config_cesm.git
-fxtag = I_need_a_new_tag_here 
+fxtag = ccs_config_cesm1.0.21 
 fxrequired = ToplevelRequired
 fxDONOTUSEurl = https://github.com/ESMCI/ccs_config_cesm.git