diff --git a/.github/workflows/pr-size-labeler.yml b/.github/workflows/pr-size-labeler.yml
new file mode 100644
index 00000000..bea2749f
--- /dev/null
+++ b/.github/workflows/pr-size-labeler.yml
@@ -0,0 +1,34 @@
+name: PR Size Labeler
+
+on:
+  pull_request_target:
+    types: [opened, synchronize, reopened, edited]
+
+permissions:
+  pull-requests: write
+  issues: write
+  contents: read
+
+jobs:
+  size-label:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Label PR by size
+        uses: codelytv/pr-size-labeler@095a41fca88b8764fd9e008ad269bcdb82bb38b9 # v1
+        with:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          xs_label: "size/xs"
+          xs_max_size: "10"
+          s_label: "size/s"
+          s_max_size: "100"
+          m_label: "size/m"
+          m_max_size: "500"
+          l_label: "size/l"
+          l_max_size: "1000"
+          xl_label: "size/xl"
+          fail_if_xl: "false"
+          message_if_xl: >
+            This PR exceeds the recommended size of 1000 lines.
+            Please consider splitting it into smaller, focused PRs to make
+            it easier to review and reduce the risk of regressions.
+          files_to_ignore: "requirements.txt *.lock"