diff --git a/.gitmodules b/.gitmodules
index 541855a840..87460be5f3 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -124,7 +124,7 @@ fxDONOTUSEurl = https://github.com/ESMCI/mpi-serial
 [submodule "doc-builder"]
 path = doc/doc-builder
 url = https://github.com/ESMCI/doc-builder
-fxtag = v3.1.1
+fxtag = v3.2.1
 fxrequired = ToplevelOptional
 # Standard Fork to compare to with "git fleximod test" to ensure personal forks aren't committed
 fxDONOTUSEurl = https://github.com/ESMCI/doc-builder
diff --git a/doc/doc-builder b/doc/doc-builder
index 6607280dd7..15e171dfcf 160000
--- a/doc/doc-builder
+++ b/doc/doc-builder
@@ -1 +1 @@
-Subproject commit 6607280dd7a96d5606fbd6e8abe547ac0da4d62f
+Subproject commit 15e171dfcf77ca2bd85415a99a50ad3994c608c4