diff --git a/images/singleuser/requirements.txt b/images/singleuser/requirements.txt
index 27073682..07eca0c3 100644
--- a/images/singleuser/requirements.txt
+++ b/images/singleuser/requirements.txt
@@ -42,3 +42,8 @@ wmpaws
 # Web dev stuff
 flask
 fastapi
+
+# mwpersistence has a dep which pulls in PyYAML 5.4.1, which has
+# packaging issues with Cython 3.0.0 (also present in PyYAML 6.0.0).
+# Pin a higher version.
+pyyaml>6.0.0
\ No newline at end of file
diff --git a/paws/values.yaml b/paws/values.yaml
index 0ee4b144..af3288fb 100644
--- a/paws/values.yaml
+++ b/paws/values.yaml
@@ -282,7 +282,7 @@ jupyterhub:
     fsGid: 52771
     image:
       name: quay.io/wikimedia-paws-prod/singleuser
-      tag: pr-306 # singleuser tag managed by github actions
+      tag: pr-309 # singleuser tag managed by github actions
       pullPolicy: Always
     memory:
       guarantee: 1G