diff --git a/c/requirements.txt b/c/requirements.txt
index 29a8fb75..484438c7 100644
--- a/c/requirements.txt
+++ b/c/requirements.txt
@@ -1,4 +1,4 @@
-pytest>=4.4.0,<5
+pytest
 pytest-benchmark
 sortedcontainers
 u-msgpack-python
diff --git a/python/requirements.txt b/python/requirements.txt
index 220f8da8..9f25900f 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -1,5 +1,5 @@
 u-msgpack-python
-pytest>=4.4.0,<5
+pytest
 sortedcontainers
 pytest-benchmark
 pytest-mypy