diff --git a/requirements.txt b/requirements.txt
index 100bbf6..48d2a1e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ idna==3.3
 Jinja2==3.0.2
 lxml==4.6.3
 MarkupSafe==2.0.1
-mock==4.0.2
+mock==4.0.3
 multidict==5.2.0
 pycountry==20.7.3
 PyPDF2==1.26.0