diff --git a/.github/labeler.yml b/.github/labeler.yml
index 692b0867ded..85eca8ecafb 100644
--- a/.github/labeler.yml
+++ b/.github/labeler.yml
@@ -1,6 +1,3 @@
-core:
-  - core/**/*
-
 ci:
   - ci/**/*
   - .github/**/*
@@ -10,3 +7,6 @@ dashboard:
 
 consent:
   - apps/consent/*
+
+core:
+  - core/**/*
diff --git a/.github/workflows/buck2-build.yaml b/.github/workflows/buck2-build.yaml
index 02ffc041958..e4db8ee1e4b 100644
--- a/.github/workflows/buck2-build.yaml
+++ b/.github/workflows/buck2-build.yaml
@@ -1,8 +1,8 @@
-name: "Buck2 build"
-
+name: Buck2 build
 on:
   pull_request:
     branches: [main]
+    types: [opened, synchronize, labeled, unlabeled]
 
 jobs:
   buck2-build:
@@ -13,5 +13,24 @@ jobs:
       - uses: cachix/install-nix-action@v22
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Prepare Buck2 build args from labels
+        id: prepare_args
+        run: |
+          ARGS=""
+          cat <<EOF > labels.json
+          ${{ toJSON(github.event.pull_request.labels.*.name) }}
+          EOF
+          for LABEL in $(cat labels.json | jq -r '.[]') do
+            case "$LABEL" in
+              dashboard|consent)
+                ARGS+=" //apps/$LABEL"
+                ;;
+              core)
+                ARGS+=" //core/api"
+                ;;
+            esac
+          done
+          echo "Prepared args: $ARGS"
+          echo "args=$ARGS" >> "$GITHUB_OUTPUT"
       - name: Buck2 build
-        run: nix develop -c buck2 build //core/api:api
+        run: nix develop -c buck2 build ${{ steps.prepare_args.outputs.args }}