diff --git a/requirements.txt b/requirements.txt
index 032ef73b..9b3c3d1c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 # The production server runs Python 3.10.12, so pins must stay installable
 # there.
-django>=5.2,<7
+django>=5.2.18,<7
 isodate==0.7.2
 matplotlib