diff --git a/.github/actions/release-helm-oci/action.yml b/.github/actions/release-helm-oci/action.yml
index 7c3b5d05e..57c901a17 100644
--- a/.github/actions/release-helm-oci/action.yml
+++ b/.github/actions/release-helm-oci/action.yml
@@ -71,6 +71,14 @@ runs:
           exit 1
         fi
 
+    - name: Build chart dependencies
+      env:
+        CHART_DIR: ${{ steps.prep.outputs.chart_dir }}
+      shell: bash
+      run: |
+        set -euo pipefail
+        helm dependency build "${CHART_DIR}"
+
     - name: Package Helm chart
       env:
         CHART_DIR: ${{ steps.prep.outputs.chart_dir }}