diff --git a/pyproject.toml b/pyproject.toml
index 1de1f297..c5a6023d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -45,7 +45,7 @@ dependencies = [
     "pydantic-extra-types>=2.11.1,<3.0.0",
     "ical>=12.0.0,<14.0.0",
     "redis[hiredis]>=3.4.0,<8.0.0",
-    "environs[django]>=6.0.5,<16",
+    "environs[django]>=15.0.1,<16",
     "requests>=2.34.2,<3.0.0",
     "honcho>=2.0.0",
     "psutil>=7.2.2,<8.0.0",