diff --git a/Makefile b/Makefile
index 3e37057..c581ba0 100644
--- a/Makefile
+++ b/Makefile
@@ -15,6 +15,9 @@ coverage:
 	make test
 	coverage report -m
 
+submodule:
+	git submodule update --remote src/cppmdlp
+
 lint:  ## Lint and static-check
 	black src
 	flake8 --per-file-ignores="__init__.py:F401" src
diff --git a/src/cppmdlp b/src/cppmdlp
index 264105b..e214829 160000
--- a/src/cppmdlp
+++ b/src/cppmdlp
@@ -1 +1 @@
-Subproject commit 264105ba56ad5796705b6b1cda6ce62051dddd81
+Subproject commit e21482900bdf307c50b0e0b0647458cf2bb32ad5