diff --git a/dev-requirements.txt b/dev-requirements.txt
index a63ec03..925a7ef 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,5 @@
 -r requirements.txt
 flake8==3.5.0
-pytest==3.8.2
+pytest==9.0.3
 pytest-cov==2.6.0
 nox
diff --git a/examples/language-redirect/requirements.txt b/examples/language-redirect/requirements.txt
index 6a5aa35..753a114 100644
--- a/examples/language-redirect/requirements.txt
+++ b/examples/language-redirect/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.3.2
+Flask==3.1.3
 https://github.com/google/gae-secure-scaffold-python3/archive/master.zip
 google-cloud-ndb
 flask-talisman
diff --git a/examples/python-app/requirements.txt b/examples/python-app/requirements.txt
index ee17118..edc4d98 100644
--- a/examples/python-app/requirements.txt
+++ b/examples/python-app/requirements.txt
@@ -1,4 +1,4 @@
-Flask==2.3.2
+Flask==3.1.3
 https://github.com/google/gae-secure-scaffold-python3/archive/master.zip
 google-cloud-ndb
 flask-talisman