diff --git a/.github/workflows/bump-hl2sdk.yml b/.github/workflows/bump-hl2sdk.yml
new file mode 100644
index 000000000..ca655c31f
--- /dev/null
+++ b/.github/workflows/bump-hl2sdk.yml
@@ -0,0 +1,142 @@
+name: Bump hl2sdk
+
+on:
+  schedule:
+    - cron: "0 * * * *"
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  check-and-bump:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+          fetch-depth: 0
+
+      - name: Get current submodule commit
+        id: current
+        run: |
+          cd libraries/hl2sdk-cs2
+          CURRENT_COMMIT="$(git rev-parse HEAD)"
+          echo "commit=$CURRENT_COMMIT" >> "$GITHUB_OUTPUT"
+          echo "Current hl2sdk commit: $CURRENT_COMMIT"
+
+      - name: Fetch latest hl2sdk cs2 branch
+        id: latest
+        run: |
+          LATEST_COMMIT="$(git ls-remote https://github.com/alliedmodders/hl2sdk refs/heads/cs2 | cut -f1)"
+          if [ -z "${LATEST_COMMIT}" ]; then
+            echo "::error::Failed to fetch latest commit from hl2sdk"
+            exit 1
+          fi
+          echo "commit=$LATEST_COMMIT" >> "$GITHUB_OUTPUT"
+          echo "Latest hl2sdk cs2 commit: $LATEST_COMMIT"
+
+      - name: Check if update is needed
+        id: check
+        run: |
+          if [ "${{ steps.current.outputs.commit }}" = "${{ steps.latest.outputs.commit }}" ]; then
+            echo "needs_update=false" >> "$GITHUB_OUTPUT"
+            echo "hl2sdk is already up to date"
+          else
+            echo "needs_update=true" >> "$GITHUB_OUTPUT"
+            echo "hl2sdk update available!"
+          fi
+
+      - name: Check for existing PR
+        id: existing_pr
+        if: steps.check.outputs.needs_update == 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          EXISTING_PR="$(gh pr list --state open --head "chore/bump-hl2sdk" --json number,body --jq '.[0] // empty')"
+          if [ -n "${EXISTING_PR}" ]; then
+            PR_NUMBER="$(echo "${EXISTING_PR}" | jq -r '.number')"
+            echo "pr_number=$PR_NUMBER" >> "$GITHUB_OUTPUT"
+            echo "Existing PR found: #$PR_NUMBER"
+
+            EXISTING_TARGET="$(echo "${EXISTING_PR}" | jq -r '.body' | grep -oP '(?<=\*\*To:\*\* `)[a-f0-9]+(?=`)' || true)"
+            if [ "${EXISTING_TARGET}" = "${{ steps.latest.outputs.commit }}" ]; then
+              echo "skip=true" >> "$GITHUB_OUTPUT"
+              echo "Existing PR already targets latest commit, skipping"
+            else
+              echo "skip=false" >> "$GITHUB_OUTPUT"
+              echo "Existing PR needs update"
+            fi
+          else
+            echo "skip=false" >> "$GITHUB_OUTPUT"
+            echo "No existing PR found"
+          fi
+
+      - name: Update submodule
+        if: steps.check.outputs.needs_update == 'true' && steps.existing_pr.outputs.skip != 'true'
+        run: |
+          cd libraries/hl2sdk-cs2
+          git fetch origin cs2
+          git checkout ${{ steps.latest.outputs.commit }}
+          cd ../..
+          echo "Updated hl2sdk to ${{ steps.latest.outputs.commit }}"
+
+      - name: Get commit details
+        if: steps.check.outputs.needs_update == 'true' && steps.existing_pr.outputs.skip != 'true'
+        id: commit_info
+        run: |
+          cd libraries/hl2sdk-cs2
+          COMMIT_MSG=$(git log -1 --pretty=format:"%s")
+          COMMIT_AUTHOR=$(git log -1 --pretty=format:"%an")
+          COMMIT_DATE=$(git log -1 --pretty=format:"%ci")
+          SHORT_SHA=$(git rev-parse --short HEAD)
+
+          echo "message<<EOF" >> $GITHUB_OUTPUT
+          echo "$COMMIT_MSG" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+          echo "author=$COMMIT_AUTHOR" >> $GITHUB_OUTPUT
+          echo "date=$COMMIT_DATE" >> $GITHUB_OUTPUT
+          echo "short_sha=$SHORT_SHA" >> $GITHUB_OUTPUT
+
+          git log --oneline ${{ steps.current.outputs.commit }}..${{ steps.latest.outputs.commit }} | head -20 > /tmp/commits.txt
+
+      - name: Generate PR body
+        if: steps.check.outputs.needs_update == 'true' && steps.existing_pr.outputs.skip != 'true'
+        run: |
+          mkdir -p .github
+          {
+            echo "Automated PR to update hl2sdk submodule."
+            echo ""
+            echo "## Changes"
+            echo "- **From:** \`${{ steps.current.outputs.commit }}\`"
+            echo "- **To:** \`${{ steps.latest.outputs.commit }}\`"
+            echo ""
+            echo "## Commits in this update"
+            echo '```'
+            cat /tmp/commits.txt
+            echo '```'
+            echo ""
+            echo "## Latest commit info"
+            echo "- **Message:** ${{ steps.commit_info.outputs.message }}"
+            echo "- **Author:** ${{ steps.commit_info.outputs.author }}"
+            echo "- **Date:** ${{ steps.commit_info.outputs.date }}"
+            echo ""
+            echo "---"
+            echo "🤖 This PR was automatically created by the [bump-hl2sdk workflow](https://github.com/${{ github.repository }}/actions/workflows/bump-hl2sdk.yml)."
+          } > .github/pr-body.md
+
+      - name: Create or update Pull Request
+        if: steps.check.outputs.needs_update == 'true' && steps.existing_pr.outputs.skip != 'true'
+        uses: peter-evans/create-pull-request@v7
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "chore(deps): bump hl2sdk to ${{ steps.commit_info.outputs.short_sha }}"
+          branch: chore/bump-hl2sdk
+          delete-branch: true
+          title: "chore(deps): bump hl2sdk to ${{ steps.commit_info.outputs.short_sha }}"
+          body-path: .github/pr-body.md
+          labels: |
+            dependencies
+            automated