diff --git a/requirements.in b/requirements.in
index 33f34e209..660cda6a6 100644
--- a/requirements.in
+++ b/requirements.in
@@ -21,7 +21,7 @@ django-jinja==2.10.2
 elasticsearch==7.17.9
 elasticsearch-dsl==7.4.1
 ftfy==6.1.3
-python-dateutil==2.8.2
+python-dateutil==2.9.0
 zope.structuredtext==5.0
 redis==5.0.1
 dj-database-url==2.1.0
diff --git a/requirements.txt b/requirements.txt
index a32222d04..7901c7590 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -922,9 +922,9 @@ pytest-django==4.8.0 \
     --hash=sha256:5d054fe011c56f3b10f978f41a8efb2e5adfc7e680ef36fb571ada1f24779d90 \
     --hash=sha256:ca1ddd1e0e4c227cf9e3e40a6afc6d106b3e70868fd2ac5798a22501271cd0c7
     # via -r requirements.in
-python-dateutil==2.8.2 \
-    --hash=sha256:0123cacc1627ae19ddf3c27a5de5bd67ee4586fbdd6440d9748f8abb483d3e86 \
-    --hash=sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9
+python-dateutil==2.9.0 \
+    --hash=sha256:78e73e19c63f5b20ffa567001531680d939dc042bf7850431877645523c66709 \
+    --hash=sha256:cbf2f1da5e6083ac2fbfd4da39a25f34312230110440f424a14c7558bb85d82e
     # via
     #   -r requirements.in
     #   elasticsearch-dsl