diff --git a/charts/rstudio-workbench/Chart.yaml b/charts/rstudio-workbench/Chart.yaml
index 1ca706541..a08f45b5f 100644
--- a/charts/rstudio-workbench/Chart.yaml
+++ b/charts/rstudio-workbench/Chart.yaml
@@ -1,6 +1,6 @@
 name: rstudio-workbench
 description: Official Helm chart for Posit Workbench
-version: 0.10.9
+version: 0.10.10
 apiVersion: v2
 appVersion: 2026.01.1
 icon:
diff --git a/charts/rstudio-workbench/NEWS.md b/charts/rstudio-workbench/NEWS.md
index 8e319d0fe..d77c4ef48 100644
--- a/charts/rstudio-workbench/NEWS.md
+++ b/charts/rstudio-workbench/NEWS.md
@@ -1,6 +1,10 @@
 # Changelog
 
 
+## 0.10.10
+
+- Fix IPv6 address handling in `prestart-launcher.bash` to properly bracket IPv6 `KUBERNETES_SERVICE_HOST` addresses
+
 ## 0.10.9
 
 - Add missing NEWS.md entry for 0.10.8
diff --git a/charts/rstudio-workbench/README.md b/charts/rstudio-workbench/README.md
index 57fca5e36..3abffdf11 100644
--- a/charts/rstudio-workbench/README.md
+++ b/charts/rstudio-workbench/README.md
@@ -1,6 +1,6 @@
 # Posit Workbench
 
-![Version: 0.10.9](https://img.shields.io/badge/Version-0.10.9-informational?style=flat-square) ![AppVersion: 2026.01.1](https://img.shields.io/badge/AppVersion-2026.01.1-informational?style=flat-square)
+![Version: 0.10.10](https://img.shields.io/badge/Version-0.10.10-informational?style=flat-square) ![AppVersion: 2026.01.1](https://img.shields.io/badge/AppVersion-2026.01.1-informational?style=flat-square)
 
 #### _Official Helm chart for Posit Workbench_
 
@@ -24,11 +24,11 @@ To ensure a stable production deployment:
 
 ## Installing the chart
 
-To install the chart with the release name `my-release` at version 0.10.9:
+To install the chart with the release name `my-release` at version 0.10.10:
 
 ```{.bash}
 helm repo add rstudio https://helm.rstudio.com
-helm upgrade --install my-release rstudio/rstudio-workbench --version=0.10.9
+helm upgrade --install my-release rstudio/rstudio-workbench --version=0.10.10
 ```
 
 To explore other chart versions, look at:
diff --git a/charts/rstudio-workbench/prestart-launcher.bash b/charts/rstudio-workbench/prestart-launcher.bash
index ff5d06ada..0802b81e7 100644
--- a/charts/rstudio-workbench/prestart-launcher.bash
+++ b/charts/rstudio-workbench/prestart-launcher.bash
@@ -7,7 +7,11 @@ main() {
   local dyn_dir='/mnt/dynamic/rstudio'
 
   local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-  local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+  local host="${KUBERNETES_SERVICE_HOST}"
+  if [[ "${host}" == *:* ]]; then
+    host="[${host}]"
+  fi
+  local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
 
   _logf 'Loading service account token'
   local sa_token
diff --git a/charts/rstudio-workbench/snapshot/complex-values.yaml.lock b/charts/rstudio-workbench/snapshot/complex-values.yaml.lock
index deda109b3..13fc6fadd 100644
--- a/charts/rstudio-workbench/snapshot/complex-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/complex-values.yaml.lock
@@ -351,7 +351,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/default-sa-values.yaml.lock b/charts/rstudio-workbench/snapshot/default-sa-values.yaml.lock
index 28e12ce51..a874a267d 100644
--- a/charts/rstudio-workbench/snapshot/default-sa-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/default-sa-values.yaml.lock
@@ -253,7 +253,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/default.yaml.lock b/charts/rstudio-workbench/snapshot/default.yaml.lock
index ec9061573..926b923d7 100644
--- a/charts/rstudio-workbench/snapshot/default.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/default.yaml.lock
@@ -260,7 +260,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/empty-values.yaml.lock b/charts/rstudio-workbench/snapshot/empty-values.yaml.lock
index ec9061573..926b923d7 100644
--- a/charts/rstudio-workbench/snapshot/empty-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/empty-values.yaml.lock
@@ -260,7 +260,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/ingress-values.yaml.lock b/charts/rstudio-workbench/snapshot/ingress-values.yaml.lock
index 6cf1d40bf..2e6b0133e 100644
--- a/charts/rstudio-workbench/snapshot/ingress-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/ingress-values.yaml.lock
@@ -260,7 +260,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/ingress2-values.yaml.lock b/charts/rstudio-workbench/snapshot/ingress2-values.yaml.lock
index 197baa163..72595a560 100644
--- a/charts/rstudio-workbench/snapshot/ingress2-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/ingress2-values.yaml.lock
@@ -260,7 +260,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/launcher-template-values.yaml.lock b/charts/rstudio-workbench/snapshot/launcher-template-values.yaml.lock
index 84b27b5ba..3ede920c7 100644
--- a/charts/rstudio-workbench/snapshot/launcher-template-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/launcher-template-values.yaml.lock
@@ -595,7 +595,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/license-file-secret-values.yaml.lock b/charts/rstudio-workbench/snapshot/license-file-secret-values.yaml.lock
index d29a6cd98..1be341058 100644
--- a/charts/rstudio-workbench/snapshot/license-file-secret-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/license-file-secret-values.yaml.lock
@@ -260,7 +260,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/license-file-values.yaml.lock b/charts/rstudio-workbench/snapshot/license-file-values.yaml.lock
index 94a6a251e..dc15f29c4 100644
--- a/charts/rstudio-workbench/snapshot/license-file-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/license-file-values.yaml.lock
@@ -271,7 +271,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/license-server-values.yaml.lock b/charts/rstudio-workbench/snapshot/license-server-values.yaml.lock
index 0b9345bf7..4571d21ed 100644
--- a/charts/rstudio-workbench/snapshot/license-server-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/license-server-values.yaml.lock
@@ -261,7 +261,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/license-values.yaml.lock b/charts/rstudio-workbench/snapshot/license-values.yaml.lock
index 080a61823..e1fc9d71b 100644
--- a/charts/rstudio-workbench/snapshot/license-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/license-values.yaml.lock
@@ -270,7 +270,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/other-complex-values.yaml.lock b/charts/rstudio-workbench/snapshot/other-complex-values.yaml.lock
index 450834c1e..cc0bc5fd7 100644
--- a/charts/rstudio-workbench/snapshot/other-complex-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/other-complex-values.yaml.lock
@@ -313,7 +313,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/overrides-values-new.yaml.lock b/charts/rstudio-workbench/snapshot/overrides-values-new.yaml.lock
index 98f8524aa..0bc4c7dc9 100644
--- a/charts/rstudio-workbench/snapshot/overrides-values-new.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/overrides-values-new.yaml.lock
@@ -296,7 +296,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/overrides-values.yaml.lock b/charts/rstudio-workbench/snapshot/overrides-values.yaml.lock
index b218a68cd..389bb98e5 100644
--- a/charts/rstudio-workbench/snapshot/overrides-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/overrides-values.yaml.lock
@@ -274,7 +274,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/simple-profiles-values.yaml.lock b/charts/rstudio-workbench/snapshot/simple-profiles-values.yaml.lock
index a223e65e9..c674f5bbe 100644
--- a/charts/rstudio-workbench/snapshot/simple-profiles-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/simple-profiles-values.yaml.lock
@@ -276,7 +276,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token
diff --git a/charts/rstudio-workbench/snapshot/simple-values.yaml.lock b/charts/rstudio-workbench/snapshot/simple-values.yaml.lock
index 2c9338a4d..d3f9c6b2e 100644
--- a/charts/rstudio-workbench/snapshot/simple-values.yaml.lock
+++ b/charts/rstudio-workbench/snapshot/simple-values.yaml.lock
@@ -273,7 +273,11 @@ data:
       local dyn_dir='/mnt/dynamic/rstudio'
     
       local cacert='/var/run/secrets/kubernetes.io/serviceaccount/ca.crt'
-      local k8s_url="https://${KUBERNETES_SERVICE_HOST}:${KUBERNETES_SERVICE_PORT}"
+      local host="${KUBERNETES_SERVICE_HOST}"
+      if [[ "${host}" == *:* ]]; then
+        host="[${host}]"
+      fi
+      local k8s_url="https://${host}:${KUBERNETES_SERVICE_PORT}"
     
       _logf 'Loading service account token'
       local sa_token