diff --git a/requirements-dev.txt b/requirements-dev.txt
index fc0bf4f..3b7c23f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@ cirq>=0.8.0
 numpy
 pycodestyle
 pydocstyle==4.0.1
-pytest==4.3.1
+pytest==9.0.3
 pytest-cov==2.7.1
 qiskit>=0.19.0
 qcware-quasar>=1.0.0