diff --git a/requirements_cove.txt b/requirements_cove.txt
index 9dfefb1..309a851 100644
--- a/requirements_cove.txt
+++ b/requirements_cove.txt
@@ -141,7 +141,7 @@ urllib3==2.3.0
     #   sentry-sdk
 webencodings==0.5.1
     # via bleach
-werkzeug==3.1.3
+werkzeug==3.1.9
     # via libcoveweb
 whitenoise==6.9.0
     # via -r requirements_cove.in
diff --git a/requirements_cove_dev.txt b/requirements_cove_dev.txt
index f4417bf..f68371a 100644
--- a/requirements_cove_dev.txt
+++ b/requirements_cove_dev.txt
@@ -300,7 +300,7 @@ urllib3-secure-extra==0.1.0
     # via urllib3
 webencodings==0.5.1
     # via bleach
-werkzeug==3.1.3
+werkzeug==3.1.9
     # via
     #   libcoveweb
     #   pytest-localserver
diff --git a/requirements_cove_dokku.txt b/requirements_cove_dokku.txt
index 3d7cfec..0900374 100644
--- a/requirements_cove_dokku.txt
+++ b/requirements_cove_dokku.txt
@@ -190,7 +190,7 @@ webencodings==0.5.1
     # via
     #   -r requirements_cove.txt
     #   bleach
-werkzeug==3.1.3
+werkzeug==3.1.9
     # via
     #   -r requirements_cove.txt
     #   libcoveweb