diff --git a/.gitmodules b/.gitmodules
index 787b14c9..15bf89f7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -8,7 +8,7 @@
         path          = src/dynamics/mpas/dycore
         url           = https://github.com/MPAS-Dev/MPAS-Model.git
         fxsparse      = ../.mpas_sparse_checkout
-        fxtag         = ed6f8e39ec0a811b6d079ca0fc6f9fb6e30bad23
+        fxtag         = v8.2.1
         fxrequired    = AlwaysRequired
         fxDONOTUSEurl = https://github.com/MPAS-Dev/MPAS-Model.git
 [submodule "ncar-physics"]
diff --git a/src/dynamics/mpas/dycore b/src/dynamics/mpas/dycore
index ed6f8e39..b566fc8a 160000
--- a/src/dynamics/mpas/dycore
+++ b/src/dynamics/mpas/dycore
@@ -1 +1 @@
-Subproject commit ed6f8e39ec0a811b6d079ca0fc6f9fb6e30bad23
+Subproject commit b566fc8a959390d838aba08fd03c81edae986f6a