diff --git a/pyproject.toml b/pyproject.toml
index 8c29e3a..0c6d6c0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -71,7 +71,7 @@ dev = [
   "deptry~=0.19",              # Dependency tree testing
   "pyinstaller~=6.11",         # Create standalone executable
   "pyright~=1.1",              # Static type checker
-  "pytest-asyncio~=0.23",      # Pytest plugin for async tests
+  "pytest-asyncio>=0.23,<2.0",      # Pytest plugin for async tests
   "pytest-repeat~=0.9",        # Pytest plugin for repeating tests
   "pytest-xdist[psutil]~=3.6", # Pytest plugin for parallel testing
   "pytest~=8.3",               # Testing framework