diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index 84aecb0df0..a8154b0381 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -12,6 +12,7 @@ concurrency:
 jobs:
   pr-builder:
     needs:
+      - changed-files
       - checks
       - clang-tidy
       - conda-cpp-build
@@ -27,6 +28,45 @@ jobs:
       - devcontainer
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@branch-24.12
+    if: always()
+    with:
+      needs: ${{ toJSON(needs) }}
+  changed-files:
+    secrets: inherit
+    uses: rapidsai/shared-workflows/.github/workflows/changed-files.yaml@branch-24.12
+    with:
+      files_yaml: |
+        test_cpp:
+          - '**'
+          - '!.devcontainer/**'
+          - '!CONTRIBUTING.md'
+          - '!README.md'
+          - '!docs/**'
+          - '!img/**'
+          - '!notebooks/**'
+          - '!python/**'
+          - '!thirdparty/LICENSES/**'
+          # TODO: Remove before merging
+          - '!.github/workflows/**'
+        test_notebooks:
+          - '**'
+          - '!.devcontainer/**'
+          - '!CONTRIBUTING.md'
+          - '!README.md'
+          - '!thirdparty/LICENSES/**'
+          # TODO: Remove before merging
+          - '!.github/workflows/**'
+        test_python:
+          - '**'
+          - '!.devcontainer/**'
+          - '!CONTRIBUTING.md'
+          - '!README.md'
+          - '!docs/**'
+          - '!img/**'
+          - '!notebooks/**'
+          - '!thirdparty/LICENSES/**'
+          # TODO: Remove before merging
+          - '!.github/workflows/**'
   checks:
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@branch-24.12
@@ -51,9 +91,10 @@ jobs:
     with:
       build_type: pull-request
   conda-cpp-tests:
-    needs: conda-cpp-build
+    needs: [conda-cpp-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_cpp
     with:
       build_type: pull-request
   conda-cpp-checks:
@@ -71,31 +112,35 @@ jobs:
     with:
       build_type: pull-request
   conda-python-tests-singlegpu:
-    needs: conda-python-build
+    needs: [conda-python-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       script: "ci/test_python_singlegpu.sh"
   optional-job-conda-python-tests-cudf-pandas-integration:
-    needs: conda-python-build
+    needs: [conda-python-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       matrix_filter: map(select(.ARCH == "amd64"))
       build_type: pull-request
       script: "ci/test_python_integration.sh"
   conda-python-tests-dask:
-    needs: conda-python-build
+    needs: [conda-python-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       script: "ci/test_python_dask.sh"
   conda-notebook-tests:
-    needs: conda-python-build
+    needs: [conda-python-build, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_notebooks
     with:
       build_type: pull-request
       node_type: "gpu-v100-latest-1"
@@ -123,9 +168,10 @@ jobs:
       extra-repo-sha: branch-24.12
       extra-repo-deploy-key: CUMLPRIMS_SSH_PRIVATE_DEPLOY_KEY
   wheel-tests-cuml:
-    needs: wheel-build-cuml
+    needs: [wheel-build-cuml, changed-files]
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
+    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
     with:
       build_type: pull-request
       script: ci/test_wheel.sh