diff --git a/pyproject.toml b/pyproject.toml
index 200a293a..2e0e1784 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
 
 
 [project.optional-dependencies]
-tests = ["pytest==8.1.1", "pytest-cov==5.0.0", "pyfakefs==5.3.5"]
+tests = ["pytest==8.1.1", "pytest-cov==5.0.0", "pyfakefs==5.4.0"]
 
 doc = [
     "Sphinx==7.2.6",