diff --git a/actions/helm-lint/README.md b/actions/helm-lint/README.md
index cd2f19be..6694c268 100644
--- a/actions/helm-lint/README.md
+++ b/actions/helm-lint/README.md
@@ -9,7 +9,7 @@ It detects which charts have changed and only tests those.
 
 | Name         | Description                                                  | Required |
 |--------------|--------------------------------------------------------------|----------|
-| `chartDirs`  | Comma-separated list of root directories with Helm charts.   | ✅ Yes     |
+| `chartDirs`  | Comma-separated list of root directories with Helm charts.   |   No     |
 
 ## 📤 Outputs
 
diff --git a/actions/helm-lint/action.yaml b/actions/helm-lint/action.yaml
index 22dd493e..8ccd458d 100644
--- a/actions/helm-lint/action.yaml
+++ b/actions/helm-lint/action.yaml
@@ -3,7 +3,7 @@ description: "An action to lint and test Helm charts using chart-testing and kin
 inputs:
   chartDirs:
     description: "Comma-separated list of root directories containing Helm charts."
-    required: true
+    required: false
     default: "."
 outputs:
   changed: 
@@ -34,7 +34,7 @@ runs:
     - name: Run chart-testing (list-changed)
       id: list_changed
       run: |
-        changed=$(ct list-changed --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.base_ref || github.event.repository.default_branch }}")
+        changed=$(ct list-changed --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.event.repository.default_branch }}")
         if [[ -n "$changed" ]]; then
           echo "changed=true" >> "$GITHUB_OUTPUT"
         fi
@@ -42,7 +42,7 @@ runs:
 
     - name: Run chart-testing (lint)
       if: steps.list-changed.outputs.changed == 'true'
-      run: ct lint --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.base_ref || github.event.repository.default_branch }}"
+      run: ct lint --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.event.repository.default_branch }}"
       shell: bash
 
     - name: Create kind cluster
@@ -51,5 +51,5 @@ runs:
 
     - name: Run chart-testing (install)
       if: steps.list-changed.outputs.changed == 'true'
-      run: ct install --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.base_ref || github.event.repository.default_branch }}"
+      run: ct install --chart-dirs "${{ inputs.chartDirs }}" --target-branch "${{ github.event.repository.default_branch }}"
       shell: bash