diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index c10538b..7d41aff 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,10 +27,6 @@ jobs:
           git config user.name "$GITHUB_ACTOR"
           git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
 
-      - name: Add dependencies
-        run: |
-          helm repo add bitnami https://charts.bitnami.com/bitnami
-
       - name: Run chart-releaser
         uses: helm/chart-releaser-action@a917fd15b20e8b64b94d9158ad54cd6345335584 # pin@v1.6.0
         with:
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index b3015d6..a1ecb41 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -51,7 +51,6 @@ jobs:
       - name: "Add NGINX Ingress and Bitnami Repository"
         run: |
           helm repo add ingress-nginx "https://kubernetes.github.io/ingress-nginx"
-          helm repo add bitnami "https://charts.bitnami.com/bitnami"
           helm repo update
 
       - name: Run chart-testing (lint)
diff --git a/README.md b/README.md
index b18376d..ceaa540 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,6 @@ Charts are available in the following formats:
 The following command can be used to add the chart repository:
 
 ```console
-helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo add backstage https://backstage.github.io/charts
 ```
 
diff --git a/charts/backstage/Chart.lock b/charts/backstage/Chart.lock
index 7b3dd0b..b88bfa7 100644
--- a/charts/backstage/Chart.lock
+++ b/charts/backstage/Chart.lock
@@ -1,9 +1,9 @@
 dependencies:
 - name: common
-  repository: https://charts.bitnami.com/bitnami
+  repository: oci://registry-1.docker.io/bitnamicharts
   version: 2.10.0
 - name: postgresql
-  repository: https://charts.bitnami.com/bitnami
+  repository: oci://registry-1.docker.io/bitnamicharts
   version: 12.10.0
-digest: sha256:e50e9681e108218aed1e8acaf4877290278a857a785dcd0cd28b92a73f2e8b05
-generated: "2023-09-05T14:49:26.276046+02:00"
+digest: sha256:77630aa988cef5e3a9f64a9fc3427345f451534e973dbece805850be587cb59e
+generated: "2024-05-11T14:39:32.274594+01:00"
diff --git a/charts/backstage/Chart.yaml b/charts/backstage/Chart.yaml
index 787ed7d..480c8c0 100644
--- a/charts/backstage/Chart.yaml
+++ b/charts/backstage/Chart.yaml
@@ -12,14 +12,14 @@ apiVersion: v2
 description: A Helm chart for deploying a Backstage application
 dependencies:
   - name: common
-    repository: https://charts.bitnami.com/bitnami
+    repository: oci://registry-1.docker.io/bitnamicharts
     tags:
       - bitnami-common
-    version: 2.x.x
+    version: 2.10.0
   - condition: postgresql.enabled
     name: postgresql
-    repository: https://charts.bitnami.com/bitnami
-    version: 12.x.x
+    repository: oci://registry-1.docker.io/bitnamicharts
+    version: 12.10.0
 home: https://backstage.io
 icon: https://raw.githubusercontent.com/cncf/artwork/master/projects/backstage/icon/color/backstage-icon-color.svg
 keywords:
diff --git a/charts/backstage/README.md b/charts/backstage/README.md
index 55e7e55..a56b9ad 100644
--- a/charts/backstage/README.md
+++ b/charts/backstage/README.md
@@ -31,7 +31,6 @@ Backstage unifies all your infrastructure tooling, services, and documentation t
 ## TL;DR
 
 ```console
-helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo add backstage https://backstage.github.io/charts
 
 helm install my-release backstage/backstage
@@ -106,8 +105,8 @@ Kubernetes: `>= 1.19.0-0`
 
 | Repository | Name | Version |
 |------------|------|---------|
-| https://charts.bitnami.com/bitnami | common | 2.x.x |
-| https://charts.bitnami.com/bitnami | postgresql | 12.x.x |
+| oci://registry-1.docker.io/bitnamicharts | common | 2.10.0 |
+| oci://registry-1.docker.io/bitnamicharts | postgresql | 12.10.0 |
 
 ## Values
 
diff --git a/charts/backstage/README.md.gotmpl b/charts/backstage/README.md.gotmpl
index 9111012..0340738 100644
--- a/charts/backstage/README.md.gotmpl
+++ b/charts/backstage/README.md.gotmpl
@@ -25,7 +25,6 @@ Backstage unifies all your infrastructure tooling, services, and documentation t
 ## TL;DR
 
 ```console
-helm repo add bitnami https://charts.bitnami.com/bitnami
 helm repo add backstage https://backstage.github.io/charts
 
 helm install my-release backstage/backstage