diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 71be8c09e2c..dc7376a39af 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -43,6 +43,9 @@ jobs:
           java-version: ${{ matrix.jvm }}
       - name: Cache Scala
         uses: coursier/cache-action@v5
+      - name: Check Formatting (Scala 2.12 only)
+        if: startsWith(matrix.scala, '2.12')
+        run: sbt ++${{ matrix.scala }} scalafmtCheckAll
       - name: Documentation (Scala 2.12 only)
         if: startsWith(matrix.scala, '2.12')
         run: sbt ++${{ matrix.scala }} docs/mdoc unidoc