diff --git a/Makefile b/Makefile
index f05d29561..5f1547db4 100644
--- a/Makefile
+++ b/Makefile
@@ -265,7 +265,7 @@ release-major: check-release bumpversion-major release
 
 .PHONY: check-deps
 check-deps:
-	$(eval allow_list='cloudpickle=|graphviz=|numpy=|pandas=|tqdm=|copulas=|ctgan=|deepecho=|rdt=|sdmetrics=|platformdirs=')
+	$(eval allow_list='cloudpickle=|graphviz=|numpy=|pandas=|tqdm=|copulas=|ctgan=|deepecho=|rdt=|sdmetrics=|platformdirs=|pyyaml=')
 	pip freeze | grep -v "SDV.git" | grep -E $(allow_list) | sort > $(OUTPUT_FILEPATH)
 
 .PHONY: upgradepip
diff --git a/pyproject.toml b/pyproject.toml
index 900616666..91f25152b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,6 +38,7 @@ dependencies = [
     'rdt>=1.12.0',
     'sdmetrics>=0.14.0',
     'platformdirs>=4.0',
+    'pyyaml>=6.0.1',
 ]
 
 [project.urls]