diff --git a/requirements-dev.txt b/requirements-dev.txt
index 0f2d4cc4b..19cc0fbff 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -216,7 +216,7 @@ flake8==7.3.0
     #   flake8-pyproject
 flake8-pyproject==1.2.4
     # via -r requirements-dev.in
-flask==2.3.3
+flask==3.1.3
     # via
     #   -r requirements-tests.txt
     #   flask-bcrypt
@@ -428,6 +428,7 @@ markdown-it-py==4.0.0
 markupsafe==3.0.3
     # via
     #   -r requirements-tests.txt
+    #   flask
     #   jinja2
     #   mako
     #   werkzeug
diff --git a/requirements-docs.in b/requirements-docs.in
index dcf216ae7..208747e9a 100644
--- a/requirements-docs.in
+++ b/requirements-docs.in
@@ -14,7 +14,7 @@ CloudFlare
 cryptography
 dnspython3
 dyn
-Flask<3  # until https://github.com/pytest-dev/pytest-flask/pull/168 is released
+Flask<4  # until https://github.com/pytest-dev/pytest-flask/pull/168 is released
 Flask-Bcrypt
 Flask-Cors
 Flask-Limiter
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 673882da1..759cb8d09 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -224,7 +224,7 @@ faker==40.28.1
     #   factory-boy
 fakeredis==2.36.2
     # via -r requirements-tests.txt
-flask==2.3.3
+flask==3.1.3
     # via
     #   -r requirements-docs.in
     #   -r requirements-tests.txt
@@ -448,6 +448,7 @@ markdown-it-py==4.0.0
 markupsafe==3.0.3
     # via
     #   -r requirements-tests.txt
+    #   flask
     #   jinja2
     #   mako
     #   werkzeug
diff --git a/requirements-tests.txt b/requirements-tests.txt
index cb1739ff6..1abce4d40 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -186,7 +186,7 @@ faker==40.28.1
     #   factory-boy
 fakeredis==2.36.2
     # via -r requirements-tests.in
-flask==2.3.3
+flask==3.1.3
     # via
     #   -r requirements.txt
     #   flask-bcrypt
@@ -359,6 +359,7 @@ markdown-it-py==4.0.0
 markupsafe==3.0.3
     # via
     #   -r requirements.txt
+    #   flask
     #   jinja2
     #   mako
     #   werkzeug
diff --git a/requirements.in b/requirements.in
index 8a2b6bc0c..1777eed7e 100644
--- a/requirements.in
+++ b/requirements.in
@@ -21,7 +21,7 @@ Flask-Migrate
 Flask-Principal
 Flask-RESTful
 Flask-SQLAlchemy
-Flask<3  # until https://github.com/pytest-dev/pytest-flask/pull/168 is released
+Flask<4  # until https://github.com/pytest-dev/pytest-flask/pull/168 is released
 Flask-Cors
 flask_replicated
 future
diff --git a/requirements.txt b/requirements.txt
index 8940f69ae..e2328ff92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -101,7 +101,7 @@ dyn==1.8.6
     # via -r requirements.in
 exceptiongroup==1.3.1
     # via celery
-flask==2.3.3
+flask==3.1.3
     # via
     #   -r requirements.in
     #   flask-bcrypt
@@ -213,6 +213,7 @@ mako==1.3.12
     # via alembic
 markupsafe==3.0.3
     # via
+    #   flask
     #   jinja2
     #   mako
     #   werkzeug