diff --git a/.github/workflows/validate-submission.yaml b/.github/workflows/validate-submission.yaml
index f0857ad3..3ed6640c 100644
--- a/.github/workflows/validate-submission.yaml
+++ b/.github/workflows/validate-submission.yaml
@@ -1,81 +1,34 @@
 name: Hub Submission Validation (R)
 
 on:
-  workflow_dispatch:
+  push:
+    branches:
+      - main
   pull_request:
-    branches: main
-    paths:
-      - 'model-output/**'
-      - 'model-metadata/*'
+    branches:
+      - main
 
 jobs:
   validate-submission:
-    runs-on: ubuntu-22.04
-    env:
-      GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
+    runs-on: ubuntu-latest
 
     steps:
-      - name: Check out repository
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 2
-      - name: Set up R
-        uses: r-lib/actions/setup-r@v2
-        with:
-          install-r: false
-          use-public-rspm: true
-                      
-      - name: Install system dependencies
-        run: |
-          sudo apt-get update
-          sudo apt-get install libcurl4-openssl-dev libv8-dev
-      - name: Cache R packages
-        uses: actions/cache@v4
-        with:
-          path: ${{ env.R_LIBS_USER }}
-          key: ${{ runner.os }}-r-${{ hashFiles('DESCRIPTION') }}
-          restore-keys: ${{ runner.os }}-r-
+    - name: Checkout repository
+      uses: actions/checkout@v3
 
-      - name: Install hubUtils from specific branch
-        run: |
-          Rscript -e 'install.packages("remotes")'
-          Rscript -e 'remotes::install_github("kjsato/hubUtils@main-mr_schema", upgrade = "never")'
-      - name: Install hubData from specific branch
-        run: |
-          Rscript -e 'remotes::install_github("kjsato/hubData@main-mr_schema", upgrade = "never")'
-      - name: Install hubAdmin from specific branch
-        run: |
-          Rscript -e 'remotes::install_github("kjsato/hubAdmin@main-mr_schema", upgrade = "never")'
-      - name: Install HubValidations
-        run: |
-          Rscript -e 'remotes::install_github("kjsato/hubValidations@main-mr_schema-conv_origin_date", upgrade = "never")'
+    - name: Set up R
+      uses: r-lib/actions/setup-r@v2
 
-      - name: Run validations
-        env:
-          PR_NUMBER: ${{ github.event.number }}
-        run: |
-          library("hubValidations")
-          v <- hubValidations::validate_pr(
-              gh_repo = Sys.getenv("GITHUB_REPOSITORY"),
-              pr_number = Sys.getenv("PR_NUMBER"),
-              skip_submit_window_check = FALSE
-          )
-          hubValidations::check_for_errors(v)
-        shell: Rscript {0}
-      - name: Check for changes
-        id: check_changes
-        run: |
-          git diff --quiet || echo "changes_detected=true" >> $GITHUB_ENV
-
-      - name: Commit and push changes
-        if: env.changes_detected == 'true'
-        run: |
-          git config --global user.name 'github-actions[bot]'
-          git config --global user.email '41898282+github-actions[bot]@users.noreply.github.com'
-          git add .
-          git commit -m "Automatically update files after validation"
-          git push origin HEAD:${{ github.head_ref }}
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    - name: Cache R packages
+      uses: actions/cache@v4
+      with:
+        path: ${{ runner.tool_cache }}/R
+        key: ${{ runner.os }}-r-${{ hashFiles('**/*.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-r-
 
+    - name: Install dependencies
+      run: Rscript -e 'install.packages(readLines("dependencies.txt"))'
 
+    - name: Run validation script
+      run: Rscript validate.R