diff --git a/requirements-dev.txt b/requirements-dev.txt
index 809ad7d..7a366fc 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -1,8 +1,8 @@
 -r requirements.txt
 mypy~=1.10.1
 ruff~=0.5.2
-numpy~=1.26.4; python_version > '3.9'
-numpy~=1.24.4; python_version <= '3.9'
+numpy~=1.26.4; python_version > '3.8'
+numpy~=1.24.4; python_version <= '3.8'
 pytest~=8.2.2
 pytest-cov~=5.0.0
 freezegun~=1.5.1