diff --git a/tests/requirements.txt b/tests/requirements.txt
index 874a8a0..a0e33b0 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,3 +1,3 @@
 pytest>=7,<7.3
 pytest-asyncio-cooperative>=0.37.0,<0.38
-foamlib>=0.1.0,<0.5.0
+foamlib>=0.1.0,<0.6.0