diff --git a/requirements.in b/requirements.in
index 7c227128..ffbd1631 100644
--- a/requirements.in
+++ b/requirements.in
@@ -316,7 +316,7 @@ pyparsing==3.2.5
     # via matplotlib
 pyproject-api==1.10.0
     # via tox
-pytest==8.4.2
+pytest==9.0.0
     # via
     #   mozilla-jetstream
     #   pytest-cov
diff --git a/requirements.txt b/requirements.txt
index 973a8f0f..18cccedb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1866,9 +1866,9 @@ pyproject-api==1.10.0 \
     # via
     #   -r requirements.in
     #   tox
-pytest==8.4.2 \
-    --hash=sha256:86c0d0b93306b961d58d62a4db4879f27fe25513d4b969df351abdddb3c30e01 \
-    --hash=sha256:872f880de3fc3a5bdc88a11b39c9710c3497a547cfa9320bc3c5e62fbf272e79
+pytest==9.0.0 \
+    --hash=sha256:8f44522eafe4137b0f35c9ce3072931a788a21ee40a2ed279e817d3cc16ed21e \
+    --hash=sha256:e5ccdf10b0bac554970ee88fc1a4ad0ee5d221f8ef22321f9b7e4584e19d7f96
     # via
     #   -r requirements.in
     #   pytest-cov