diff --git a/requirements/base.txt b/requirements/base.txt
index 0de4446..e7f0e0e 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -8,8 +8,10 @@ appdirs==1.4.4
     # via fs
 asgiref==3.8.1
     # via django
-backports-zoneinfo==0.2.1
-    # via django
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
+    # via
+    #   -c requirements/constraints.txt
+    #   django
 django==4.2.11
     # via
     #   -c requirements/common_constraints.txt
diff --git a/requirements/quality.txt b/requirements/quality.txt
index 2ae90fe..de0f026 100644
--- a/requirements/quality.txt
+++ b/requirements/quality.txt
@@ -17,8 +17,9 @@ astroid==3.1.0
     #   -r requirements/test.txt
     #   pylint
     #   pylint-celery
-backports-zoneinfo==0.2.1
+backports-zoneinfo==0.2.1 ; python_version < "3.9"
     # via
+    #   -c requirements/constraints.txt
     #   -r requirements/base.txt
     #   django
 click==8.1.7