diff --git a/.github/workflows/check-licenses.yaml b/.github/workflows/check-licenses.yaml
index 00cca23f5..b56b462bc 100644
--- a/.github/workflows/check-licenses.yaml
+++ b/.github/workflows/check-licenses.yaml
@@ -13,6 +13,8 @@ on:
 jobs:
   getChangedChart:
     uses: ./.github/workflows/get-changed-chart.yaml
+    with:
+      pr_number: ${{ github.event.pull_request.number }}
   check-licenses:
     name: check licenses
     runs-on: ubuntu-latest
diff --git a/.github/workflows/get-changed-chart.yaml b/.github/workflows/get-changed-chart.yaml
index 129dae3e7..0e486d7c0 100644
--- a/.github/workflows/get-changed-chart.yaml
+++ b/.github/workflows/get-changed-chart.yaml
@@ -5,6 +5,7 @@ on:
     inputs:
       pr_number:
         type: number
+        required: true
     outputs:
       chart:
         description: The name of the changed cart in the last commit
diff --git a/.github/workflows/get-changed-charts.yaml b/.github/workflows/get-changed-charts.yaml
index 3ba23cd93..8ea728a46 100644
--- a/.github/workflows/get-changed-charts.yaml
+++ b/.github/workflows/get-changed-charts.yaml
@@ -5,6 +5,7 @@ on:
     inputs:
       pr_number:
         type: number
+        required: true
     outputs:
       charts:
         description: The names of the changed charts in the PR