diff --git a/charts/argo-cd/Chart.yaml b/charts/argo-cd/Chart.yaml
index b260b1c9..eff7d03e 100644
--- a/charts/argo-cd/Chart.yaml
+++ b/charts/argo-cd/Chart.yaml
@@ -3,7 +3,7 @@ appVersion: v2.12.4
 kubeVersion: ">=1.25.0-0"
 description: A Helm chart for Argo CD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 7.6.5
+version: 7.6.6
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 sources:
@@ -26,5 +26,5 @@ annotations:
     fingerprint: 2B8F22F57260EFA67BE1C5824B11F800CD9D2252
     url: https://argoproj.github.io/argo-helm/pgp_keys.asc
   artifacthub.io/changes: |
-    - kind: changed
-      description: Bump argo-cd to v2.12.4
+    - kind: added
+      description: Value configs.params."server.enable.proxy.extension" was added
diff --git a/charts/argo-cd/README.md b/charts/argo-cd/README.md
index 6d07f360..108c9673 100644
--- a/charts/argo-cd/README.md
+++ b/charts/argo-cd/README.md
@@ -754,6 +754,7 @@ NAME: my-release
 | configs.params."server.basehref" | string | `"/"` | Value for base href in index.html. Used if Argo CD is running behind reverse proxy under subpath different from / |
 | configs.params."server.disable.auth" | bool | `false` | Disable Argo CD RBAC for user authentication |
 | configs.params."server.enable.gzip" | bool | `true` | Enable GZIP compression |
+| configs.params."server.enable.proxy.extension" | bool | `false` | Enable proxy extension feature. (proxy extension is in Alpha phase) |
 | configs.params."server.insecure" | bool | `false` | Run server without TLS |
 | configs.params."server.rootpath" | string | `""` | Used if Argo CD is running behind reverse proxy under subpath different from / |
 | configs.params."server.staticassets" | string | `"/shared/app"` | Directory path that contains additional static assets |
diff --git a/charts/argo-cd/values.yaml b/charts/argo-cd/values.yaml
index 832d4184..e6479acb 100644
--- a/charts/argo-cd/values.yaml
+++ b/charts/argo-cd/values.yaml
@@ -228,6 +228,25 @@ configs:
     #     - profile
     #     - email
 
+    # Extension Configuration
+    ## Ref: https://argo-cd.readthedocs.io/en/latest/developer-guide/extensions/proxy-extensions/
+    # extension.config: |
+    #   extensions:
+    #   - name: httpbin
+    #     backend:
+    #       connectionTimeout: 2s
+    #       keepAlive: 15s
+    #       idleConnectionTimeout: 60s
+    #       maxIdleConnections: 30
+    #       services:
+    #       - url: http://httpbin.org
+    #         headers:
+    #         - name: some-header
+    #           value: '$some.argocd.secret.key'
+    #         cluster:
+    #           name: some-cluster
+    #           server: https://some-cluster
+
   # Argo CD configuration parameters
   ## Ref: https://github.com/argoproj/argo-cd/blob/master/docs/operator-manual/argocd-cmd-params-cm.yaml
   params:
@@ -266,6 +285,8 @@ configs:
     server.disable.auth: false
     # -- Enable GZIP compression
     server.enable.gzip: true
+    # -- Enable proxy extension feature. (proxy extension is in Alpha phase)
+    server.enable.proxy.extension: false
     # -- Set X-Frame-Options header in HTTP responses to value. To disable, set to "".
     server.x.frame.options: sameorigin