diff --git a/.github/workflows/osrm-backend.yml b/.github/workflows/osrm-backend.yml
index 23ffbb4f5..dc5eeaa6e 100644
--- a/.github/workflows/osrm-backend.yml
+++ b/.github/workflows/osrm-backend.yml
@@ -132,14 +132,15 @@ jobs:
           #   OSRM_CONNECTION_RETRIES: 10
           #   OSRM_CONNECTION_EXP_BACKOFF_COEF: 1.5
 
-          # - name: clang-6.0-debug
-          #   continue-on-error: false
-          #   node: 12
-          #   runs-on: ubuntu-20.04
-          #   BUILD_TOOLS: ON
-          #   BUILD_TYPE: Debug
-          #   CLANG_VERSION: 6.0.0
-          #   CUCUMBER_TIMEOUT: 60000
+          - name: clang-6.0-debug
+            continue-on-error: false
+            node: 12
+            runs-on: ubuntu-20.04
+            BUILD_TOOLS: ON
+            BUILD_TYPE: Debug
+            CCOMPILER: clang-6
+            CXXCOMPILER: clang++-6
+            CUCUMBER_TIMEOUT: 60000
 
           - name: clang-11.0-debug-clang-tidy
             continue-on-error: false