diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index ffc7a2d4..d0556c42 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -27,6 +27,13 @@ Changed
 [8.9.1] - 2023-08-22
 --------------------
 
+Removed
+~~~~~~~
+
+* Removed unused direct dependency on ``six``.
+* Removed unused direct dependency on ``python-dateutil``.
+
+
 Fixed
 ~~~~~
 * Fixed Django 40 middleware deprecation warning
diff --git a/requirements/base.in b/requirements/base.in
index ffe4cf86..181dd873 100644
--- a/requirements/base.in
+++ b/requirements/base.in
@@ -7,7 +7,5 @@ django-waffle
 edx-django-utils>=3.8.0      # using new set_custom_attribute method
 edx-opaque-keys
 pyjwt[crypto]>=2.1.0      # depends on newer jwt.decode and jwt.encode
-python-dateutil>=2.0
 requests>=2.7.0
 semantic_version
-six
diff --git a/requirements/base.txt b/requirements/base.txt
index 097d36b4..96a9e92a 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -61,8 +61,6 @@ pymongo==3.13.0
     # via edx-opaque-keys
 pynacl==1.5.0
     # via edx-django-utils
-python-dateutil==2.8.2
-    # via -r requirements/base.in
 pytz==2023.3.post1
     # via
     #   django
@@ -71,10 +69,6 @@ requests==2.31.0
     # via -r requirements/base.in
 semantic-version==2.10.0
     # via -r requirements/base.in
-six==1.16.0
-    # via
-    #   -r requirements/base.in
-    #   python-dateutil
 sqlparse==0.4.4
     # via django
 stevedore==5.1.0
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 694a7cc8..6d0f1e0e 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -270,7 +270,6 @@ pytest-django==4.5.2
     # via -r requirements/test.txt
 python-dateutil==2.8.2
     # via
-    #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   faker
 python-slugify==8.0.1
@@ -301,10 +300,8 @@ semantic-version==2.10.0
     #   -r requirements/test.txt
 six==1.16.0
     # via
-    #   -r requirements/base.txt
     #   -r requirements/test.txt
     #   edx-lint
-    #   python-dateutil
     #   tox
 snowballstemmer==2.2.0
     # via
diff --git a/requirements/test.txt b/requirements/test.txt
index 83fdaa72..858cf717 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -175,7 +175,6 @@ pytest-django==4.5.2
     # via -r requirements/test.in
 python-dateutil==2.8.2
     # via
-    #   -r requirements/base.txt
     #   faker
 python-slugify==8.0.1
     # via code-annotations
@@ -192,9 +191,7 @@ semantic-version==2.10.0
     # via -r requirements/base.txt
 six==1.16.0
     # via
-    #   -r requirements/base.txt
     #   edx-lint
-    #   python-dateutil
     #   tox
 sqlparse==0.4.4
     # via