diff --git a/Project.toml b/Project.toml
index b6ec0b4..77c9955 100644
--- a/Project.toml
+++ b/Project.toml
@@ -12,6 +12,7 @@ SHA = "ea8e919c-243c-51af-8825-aaa63cd721ce"
 SparseArrays = "2f01184e-e22b-5df5-ae63-d93ebab69eaf"
 
 [compat]
+DocStringExtensions = "0.9"
 JSON = "0.21"
 julia = "1.6"