diff --git a/pyproject.toml b/pyproject.toml
index 9037bfb2a4..4a80e8607d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -95,10 +95,10 @@ lint = [
     "bibtexparser>=1.4.3" # used for tests/test_citation_formatting.py
 ]
 test = [
-    "pytest>=8.3.4",
-    "pytest-xdist>=3.6.1",
+    "pytest>=8.3.4,<8.4.0",
+    "pytest-xdist>=3.6.1,<3.7.0",
     "pytest-coverage>=0.0",
-    "pytest-rerunfailures>=15.0",
+    "pytest-rerunfailures>=15.0,<16.0",
     "iso639>=0.1.4", # used for tests/scripts/test_generate_model_meta.py
 ]
 dev = [