diff --git a/deployments/a11y/config/common.yaml b/deployments/a11y/config/common.yaml
index 50996635a..a75669157 100644
--- a/deployments/a11y/config/common.yaml
+++ b/deployments/a11y/config/common.yaml
@@ -51,12 +51,10 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
-    admin:
-      extraVolumeMounts:
-        - name: home
-          mountPath: /home/jovyan/shared-readwrite
-          subPath: _shared
+        extraVolumeMounts:
+          - name: home
+            mountPath: /home/jovyan/shared-readwrite
+            subPath: _shared
 
   singleuser:
     extraFiles:
diff --git a/deployments/a11y/hubploy.yaml b/deployments/a11y/hubploy.yaml
index 3fd678a08..9cd5e464d 100644
--- a/deployments/a11y/hubploy.yaml
+++ b/deployments/a11y/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/a11y-user-image:88cc27e0b9f4
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/a11y-user-image:6dcc885aabf9
 
 cluster:
   provider: gcloud
diff --git a/deployments/astro/config/common.yaml b/deployments/astro/config/common.yaml
index 76c728732..11914a030 100644
--- a/deployments/astro/config/common.yaml
+++ b/deployments/astro/config/common.yaml
@@ -95,9 +95,7 @@ jupyterhub:
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
         mem_limit: 4G
-
-    admin:
-      extraVolumeMounts:
-        - name: home
-          mountPath: /home/jovyan/shared-readwrite
-          subPath: _shared
+        extraVolumeMounts:
+          - name: home
+            mountPath: /home/jovyan/shared-readwrite
+            subPath: _shared
diff --git a/deployments/astro/hubploy.yaml b/deployments/astro/hubploy.yaml
index 29a6aa87b..2561ff5c5 100644
--- a/deployments/astro/hubploy.yaml
+++ b/deployments/astro/hubploy.yaml
@@ -1,5 +1,5 @@
 images:
-  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/astro-user-image:ffc76921fb47
+  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/astro-user-image:0063ed5f1d8f
 
 cluster:
   provider: gcloud
diff --git a/deployments/biology/config/common.yaml b/deployments/biology/config/common.yaml
index 6b6b46f17..2745daf83 100644
--- a/deployments/biology/config/common.yaml
+++ b/deployments/biology/config/common.yaml
@@ -50,17 +50,16 @@ jupyterhub:
         groups:
           - course::1524699::group::biology-admins
   custom:
-    admin:
-      extraVolumeMounts:
-        - name: home
-          mountPath: /home/jovyan/shared-readwrite
-          subPath: _shared
     group_profiles:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
         mem_limit: 4096M
         mem_guarantee: 4096M
+        extraVolumeMounts:
+          - name: home
+            mountPath: /home/jovyan/shared-readwrite
+            subPath: _shared
 
   singleuser:
     extraEnv:
diff --git a/deployments/biology/hubploy.yaml b/deployments/biology/hubploy.yaml
index 540ccad2a..cfb6b5c90 100644
--- a/deployments/biology/hubploy.yaml
+++ b/deployments/biology/hubploy.yaml
@@ -1,5 +1,5 @@
 images:
-  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/biology-user-image:7b13faa6244d
+  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/biology-user-image:d86c6301a927
 
 cluster:
   provider: gcloud
diff --git a/deployments/cee/hubploy.yaml b/deployments/cee/hubploy.yaml
index a851ce268..22a7328bf 100644
--- a/deployments/cee/hubploy.yaml
+++ b/deployments/cee/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/cee-user-image:5e393b8d22ce
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/cee-user-image:09ff7873876d
 
 cluster:
   provider: gcloud
diff --git a/deployments/data100/config/common.yaml b/deployments/data100/config/common.yaml
index 18a99b0d5..06b230c1a 100644
--- a/deployments/data100/config/common.yaml
+++ b/deployments/data100/config/common.yaml
@@ -98,14 +98,11 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
         mem_limit: 4G
-
-    admin:
-      mem_guarantee: 2G
-      extraVolumeMounts:
-        - name: home
-          mountPath: /srv/homes
-        - name: home
-          mountPath: /home/jovyan/shared-readwrite
-          subPath: _shared
+        mem_guarantee: 2G
+        extraVolumeMounts:
+          - name: home
+            mountPath: /srv/homes
+          - name: home
+            mountPath: /home/jovyan/shared-readwrite
+            subPath: _shared
diff --git a/deployments/data100/hubploy.yaml b/deployments/data100/hubploy.yaml
index 0e089f685..80c984c91 100644
--- a/deployments/data100/hubploy.yaml
+++ b/deployments/data100/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data100-user-image:6ffa8f224124
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data100-user-image:99a49eef8870
 
 cluster:
   provider: gcloud
diff --git a/deployments/data101/config/common.yaml b/deployments/data101/config/common.yaml
index a968b730a..9ffb5b383 100644
--- a/deployments/data101/config/common.yaml
+++ b/deployments/data101/config/common.yaml
@@ -227,7 +227,5 @@ jupyterhub:
   # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
-    admin:
-      mem_limit: 4G
-      mem_guarantee: 2G
+        mem_limit: 4G
+        mem_guarantee: 2G
diff --git a/deployments/data101/hubploy.yaml b/deployments/data101/hubploy.yaml
index eb51bfd38..b7cb25574 100644
--- a/deployments/data101/hubploy.yaml
+++ b/deployments/data101/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data101-user-image:ba209883023b
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data101-user-image:d9c593d14110
 
 cluster:
   provider: gcloud
diff --git a/deployments/data102/hubploy.yaml b/deployments/data102/hubploy.yaml
index ea21a0ba3..e5a5127ce 100644
--- a/deployments/data102/hubploy.yaml
+++ b/deployments/data102/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data102-user-image:1ae8a9184467
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data102-user-image:926368b429c3
 
 cluster:
   provider: gcloud
diff --git a/deployments/data8/config/common.yaml b/deployments/data8/config/common.yaml
index 6b6bdca59..44bcefd96 100644
--- a/deployments/data8/config/common.yaml
+++ b/deployments/data8/config/common.yaml
@@ -9,11 +9,9 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
-    admin:
-      extraVolumeMounts:
-        - name: home
-          mountPath: /srv/homes
+        extraVolumeMounts:
+          - name: home
+            mountPath: /srv/homes
 
   scheduling:
     userScheduler:
diff --git a/deployments/data8/hubploy.yaml b/deployments/data8/hubploy.yaml
index 4a31aeabd..218dd808d 100644
--- a/deployments/data8/hubploy.yaml
+++ b/deployments/data8/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data8-user-image:84d9c800dba0
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/data8-user-image:cc074e31975e
 
 cluster:
   provider: gcloud
diff --git a/deployments/datahub/config/common.yaml b/deployments/datahub/config/common.yaml
index 786248163..a02bad90f 100644
--- a/deployments/datahub/config/common.yaml
+++ b/deployments/datahub/config/common.yaml
@@ -36,6 +36,20 @@ jupyterhub:
         groups:
           - course::1524699::group::all-admins
 
+   # Linguistics 243, Spring 2025, https://github.com/berkeley-dsep-infra/datahub/issues/6604
+      course-staff-1541622:
+      #  description: Enable course staff to view and access servers.
+      #  # this role provides permissions to...
+        scopes:
+          - admin-ui
+          - list:users!group=course::1541622
+          - admin:servers!group=course::1541622
+          - access:servers!group=course::1541622
+      #  # this role will be assigned to...
+        groups:
+          - course::1541622::enrollment_type::teacher
+          - course::1541622::enrollment_type::ta
+
     nodeSelector:
       hub.jupyter.org/pool-name: core-pool-2024-05-08
     initContainers:
@@ -137,3 +151,13 @@ jupyterhub:
       course::1524699::group::all-admins:
         mem_limit: 4096M
         mem_guarantee: 4096M
+
+      # ENVECON 153, Spring 25, https://github.com/berkeley-dsep-infra/datahub/issues/6575
+      course::1541477:
+        mem_limit: 4096M
+        mem_guarantee: 4096M
+
+      # ECON 148, Spring 25, https://github.com/berkeley-dsep-infra/datahub/issues/6576
+      course::1541056:
+        mem_limit: 4096M
+        mem_guarantee: 4096M
diff --git a/deployments/datahub/hubploy.yaml b/deployments/datahub/hubploy.yaml
index f2d37124f..19b25b1de 100644
--- a/deployments/datahub/hubploy.yaml
+++ b/deployments/datahub/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
 
 cluster:
   provider: gcloud
diff --git a/deployments/dev/config/common.yaml b/deployments/dev/config/common.yaml
index baa137c55..9466c8f6c 100644
--- a/deployments/dev/config/common.yaml
+++ b/deployments/dev/config/common.yaml
@@ -74,7 +74,7 @@ jupyterhub:
       - display_name: "Dashboard image"
         description: "A newer repo2docker-based image with a primary focus of building dashboards."
         kubespawner_override:
-          image: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/dev-secondary-image:df11f4f1caa1
+          image: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/dev-secondary-image:d6d4f9f9b632
       - display_name: "1524699: DataHub Infrastructure"
         slug: "1524699"
         description: "Regular image with per-course subpath."
@@ -117,11 +117,9 @@ jupyterhub:
   #
   #    # Some other class 200, Spring '23; requested in #98776
   #    course::234567::enrollment_type::teacher:
-  #      admin: true
   #      mem_limit: 2096M
   #      mem_guarantee: 2048M
   #    course::234567::enrollment_type::ta:
-  #      admin: true
   #      mem_limit: 2096M
   #      mem_guarantee: 2048M
 
diff --git a/deployments/dev/hubploy.yaml b/deployments/dev/hubploy.yaml
index 7e7f2e223..ab6af49b3 100644
--- a/deployments/dev/hubploy.yaml
+++ b/deployments/dev/hubploy.yaml
@@ -1,7 +1,7 @@
 images:
   images:
     - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/dev-primary-image:958c7b2e32e3
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/dev-secondary-image:df11f4f1caa1
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/dev-secondary-image:d6d4f9f9b632
 
 cluster:
   provider: gcloud
diff --git a/deployments/dlab/hubploy.yaml b/deployments/dlab/hubploy.yaml
index d47aaf682..bc355c12f 100644
--- a/deployments/dlab/hubploy.yaml
+++ b/deployments/dlab/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
       path: ../datahub/images/default
 
 cluster:
diff --git a/deployments/edx/hubploy.yaml b/deployments/edx/hubploy.yaml
index 3d3de2228..2562207a3 100644
--- a/deployments/edx/hubploy.yaml
+++ b/deployments/edx/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/data8x-scratch/user-images/edx-user-image:44cfbcb5cc13
+    - name: us-central1-docker.pkg.dev/data8x-scratch/user-images/edx-user-image:f6de2e6dd229
 
 cluster:
   provider: gcloud
diff --git a/deployments/eecs/config/common.yaml b/deployments/eecs/config/common.yaml
index 2eb397534..6b57d2b95 100644
--- a/deployments/eecs/config/common.yaml
+++ b/deployments/eecs/config/common.yaml
@@ -99,4 +99,5 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
+        mem_limit: 2G
+        mem_guarantee: 2G
diff --git a/deployments/eecs/hubploy.yaml b/deployments/eecs/hubploy.yaml
index d89dfc3d0..867895c5f 100644
--- a/deployments/eecs/hubploy.yaml
+++ b/deployments/eecs/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/eecs-user-image:cd59fd081aad
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/eecs-user-image:fbaa642ad7a5
 
 cluster:
   provider: gcloud
diff --git a/deployments/highschool/hubploy.yaml b/deployments/highschool/hubploy.yaml
index d47aaf682..bc355c12f 100644
--- a/deployments/highschool/hubploy.yaml
+++ b/deployments/highschool/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
       path: ../datahub/images/default
 
 cluster:
diff --git a/deployments/ischool/hubploy.yaml b/deployments/ischool/hubploy.yaml
index 12f8a2043..69c0acde3 100644
--- a/deployments/ischool/hubploy.yaml
+++ b/deployments/ischool/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/ischool-user-image:e1aa95b55ec2
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/ischool-user-image:051e68a97669
 
 cluster:
   provider: gcloud
diff --git a/deployments/julia/hubploy.yaml b/deployments/julia/hubploy.yaml
index cd06294f2..9f2d612ff 100644
--- a/deployments/julia/hubploy.yaml
+++ b/deployments/julia/hubploy.yaml
@@ -1,5 +1,5 @@
 images:
-  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/julia-user-image:c4a48d8f2160
+  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/julia-user-image:fb504b6c71b2
 
 cluster:
   provider: gcloud
diff --git a/deployments/nature/hubploy.yaml b/deployments/nature/hubploy.yaml
index 671a0827b..f0d96c61a 100644
--- a/deployments/nature/hubploy.yaml
+++ b/deployments/nature/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/nature-user-image:7ea78449c906
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/nature-user-image:4f3bcec71659
 
 cluster:
   provider: gcloud
diff --git a/deployments/prob140/hubploy.yaml b/deployments/prob140/hubploy.yaml
index f2d37124f..19b25b1de 100644
--- a/deployments/prob140/hubploy.yaml
+++ b/deployments/prob140/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
 
 cluster:
   provider: gcloud
diff --git a/deployments/publichealth/config/common.yaml b/deployments/publichealth/config/common.yaml
index a00a5b6c6..30554de56 100644
--- a/deployments/publichealth/config/common.yaml
+++ b/deployments/publichealth/config/common.yaml
@@ -113,4 +113,5 @@ jupyterhub:
     group_profiles:
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
+        mem_limit: 2G
+        mem_guarantee: 2G
diff --git a/deployments/publichealth/hubploy.yaml b/deployments/publichealth/hubploy.yaml
index 18b859721..41cffe99b 100644
--- a/deployments/publichealth/hubploy.yaml
+++ b/deployments/publichealth/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/publichealth-user-image:8b87bf198328
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/publichealth-user-image:8691f424a693
 
 cluster:
   provider: gcloud
diff --git a/deployments/r/hubploy.yaml b/deployments/r/hubploy.yaml
index f2d37124f..19b25b1de 100644
--- a/deployments/r/hubploy.yaml
+++ b/deployments/r/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
 
 cluster:
   provider: gcloud
diff --git a/deployments/stat159/config/common.yaml b/deployments/stat159/config/common.yaml
index a64cf45d8..b34170982 100644
--- a/deployments/stat159/config/common.yaml
+++ b/deployments/stat159/config/common.yaml
@@ -124,9 +124,7 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
-    admin:
-      extraVolumeMounts:
-        - name: home
-          mountPath: /home/jovyan/shared-readwrite
-          subPath: _shared
+        extraVolumeMounts:
+          - name: home
+            mountPath: /home/jovyan/shared-readwrite
+            subPath: _shared
diff --git a/deployments/stat20/config/common.yaml b/deployments/stat20/config/common.yaml
index 933bce1e8..46b92aec5 100644
--- a/deployments/stat20/config/common.yaml
+++ b/deployments/stat20/config/common.yaml
@@ -84,7 +84,6 @@ jupyterhub:
       # DataHub Infrastructure staff
       # https://bcourses.berkeley.edu/courses/1524699/groups#tab-80607
       course::1524699::group::all-admins:
-        admin: true
         mem_limit: 12G
       # Shared directory to read logs data from every semester
         extraVolumeMounts:
diff --git a/deployments/stat20/hubploy.yaml b/deployments/stat20/hubploy.yaml
index 9bc6ec6ca..8feca1308 100644
--- a/deployments/stat20/hubploy.yaml
+++ b/deployments/stat20/hubploy.yaml
@@ -1,5 +1,5 @@
 images:
-  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/stat20-user-image:509d361d776c
+  image_name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/stat20-user-image:bf3646d1ec3c
 
 cluster:
   provider: gcloud
diff --git a/deployments/template/{{cookiecutter.hub_name}}/hubploy.yaml b/deployments/template/{{cookiecutter.hub_name}}/hubploy.yaml
index cbb838e5c..504468938 100644
--- a/deployments/template/{{cookiecutter.hub_name}}/hubploy.yaml
+++ b/deployments/template/{{cookiecutter.hub_name}}/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
 
 cluster:
   provider: gcloud
diff --git a/deployments/workshop/hubploy.yaml b/deployments/workshop/hubploy.yaml
index f2d37124f..19b25b1de 100644
--- a/deployments/workshop/hubploy.yaml
+++ b/deployments/workshop/hubploy.yaml
@@ -1,6 +1,6 @@
 images:
   images:
-    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:ff6231004232
+    - name: us-central1-docker.pkg.dev/ucb-datahub-2018/user-images/datahub-user-image:8275a72a7278
 
 cluster:
   provider: gcloud
diff --git a/hub/Chart.yaml b/hub/Chart.yaml
index 346af489e..fd756b0ea 100644
--- a/hub/Chart.yaml
+++ b/hub/Chart.yaml
@@ -2,4 +2,4 @@ apiVersion: v1
 appVersion: '1.0'
 description: Deployment Chart for JupyterHub
 name: hub
-version: 20240731-224556.git.8736.h299c086e
+version: 20240731-224556.git.8881.h7a44ade9
diff --git a/hub/requirements.yaml b/hub/requirements.yaml
index bb1f726e6..f0000f672 100644
--- a/hub/requirements.yaml
+++ b/hub/requirements.yaml
@@ -4,5 +4,5 @@ dependencies:
    # get the helm chart version from here:  https://github.com/jupyterhub/helm-chart
    # correlate the helm chart version w/jupyterhub here:
    # https://hub.jupyter.org/helm-chart/#development-releases-jupyterhub
-   version: 3.3.8
+   version: 4.0.0
    repository: https://jupyterhub.github.io/helm-chart/
diff --git a/hub/values.yaml b/hub/values.yaml
index fd5ae1a74..54254a3bc 100644
--- a/hub/values.yaml
+++ b/hub/values.yaml
@@ -47,8 +47,8 @@ jupyterhub:
       extraPodSpec:
         securityContext:
           sysctls:
-          - name: net.ipv4.ip_local_port_range
-            value: "10000 65000"
+            - name: net.ipv4.ip_local_port_range
+              value: "10000 65000"
       image:
         tag: 4.6.2
       # extraCommandLineFlags:
@@ -232,7 +232,6 @@ jupyterhub:
       Authenticator:
         enable_auth_state: true
         manage_groups: true
-      OAuthenticator:
         allow_all: true
       KubeSpawner:
         # Make sure working directory is ${HOME}
@@ -251,7 +250,7 @@ jupyterhub:
     # Generated by chartpress
     image:
       name: gcr.io/ucb-datahub-2018/jupyterhub-hub
-      tag: '20240731-224556.git.8057.h9643afd4'
+      tag: '20240731-224556.git.8881.h7a44ade9'
     networkPolicy:
       enabled: true
       # interNamespaceAccessLabels=accept makes the hub pod's associated
diff --git a/images/hub/Dockerfile b/images/hub/Dockerfile
index 89fe0861f..10af941b6 100644
--- a/images/hub/Dockerfile
+++ b/images/hub/Dockerfile
@@ -1,13 +1,11 @@
 # Should match the hub image used by version of chart in hub/requirements.yaml
 # If that changes, this should be changed too!
-FROM jupyterhub/k8s-hub:3.3.8
+FROM jupyterhub/k8s-hub:4.0.0
 
 USER root
 
 RUN python3 -m pip install --no-cache git+https://github.com/berkeley-dsep-infra/canvasoauthenticator@09e7ed8
-RUN python3 -m pip install --no-cache jupyterhub-ltiauthenticator==1.5.1
-#RUN python3 -m pip install --no-cache git+https://github.com/jupyterhub/kubespawner@6.1.0
-RUN python3 -m pip install --no-cache jupyterhub-announcement
+RUN python3 -m pip install --no-cache jupyterhub-ltiauthenticator==1.6.2
 COPY logos /srv/logos
 
 USER ${NB_USER}
diff --git a/node-placeholder/Chart.yaml b/node-placeholder/Chart.yaml
index 5aced5656..75276b74b 100644
--- a/node-placeholder/Chart.yaml
+++ b/node-placeholder/Chart.yaml
@@ -15,7 +15,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 20240731-224556.git.8736.h299c086e
+version: 20240731-224556.git.8881.h7a44ade9
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to