diff --git a/pyproject.toml b/pyproject.toml
index 60028b62a..e45c08184 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ dependencies = [
 dev = [
     "matplotlib",
     "seaborn",
-    "pytest>=6.2.4",
+    "pytest>=6.2.4, <=8.0.0",
     "black",
     "build",
     "pytest-cov",