diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index 8161c3e0623..ae4b939ab7b 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -126,7 +126,7 @@ pluggy==1.0.0
     # via pytest
 pre-commit==2.16.0
     # via -r requirements/lint.txt
-proxy.py==2.4.0rc3
+proxy.py==2.4.0rc4
     # via -r requirements/test.txt
 py==1.10.0
     # via pytest
diff --git a/requirements/test.txt b/requirements/test.txt
index 1c4829bee85..9c07bb8b980 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -5,7 +5,7 @@ cryptography==36.0.1; platform_machine!="i686" # no 32-bit wheels; no python 3.9
 freezegun==1.1.0
 mypy==0.930; implementation_name=="cpython"
 mypy-extensions==0.4.3; implementation_name=="cpython"
-proxy.py ~= 2.4.0rc3
+proxy.py ~= 2.4.0rc4
 pytest==6.2.5
 pytest-cov==3.0.0
 pytest-mock==3.6.1