diff --git a/requirements.txt b/requirements.txt
index 6e3a37c399d8d77f47161137a14320268679827d..82138ee947a568907e0ced324fa2529ed5ef3058 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,4 @@
 python-frontmatter
 pypandoc
 jinja2
+dateutils