diff --git a/.github/workflows/test-attach.yml b/.github/workflows/test-attach.yml
index 70f37369..ebfdf0c3 100644
--- a/.github/workflows/test-attach.yml
+++ b/.github/workflows/test-attach.yml
@@ -45,7 +45,7 @@ jobs:
           ./build/attach/frida_uprobe_attach_impl/bpftime_frida_uprobe_attach_tests
       - name: Generate frida uprobe attach test coverage
         run: |
-          lcov --capture --directory . --output-file coverage-uprobe.info
+          lcov --capture --directory . --output-file coverage-uprobe.info --gcov-tool $(which gcov-12)
           lcov --remove coverage.info '/usr/*' --output-file coverage-uprobe.info
           lcov --list coverage-uprobe.info
       - name: Upload uprobe coverage
@@ -68,7 +68,7 @@ jobs:
           ./build/attach/syscall_trace_attach_impl/bpftime_syscall_trace_attach_tests
       - name: Generate syscall trace uprobe attach coverage
         run: |
-          lcov --capture --directory . --output-file coverage-syscall-trace.info
+          lcov --capture --directory . --output-file coverage-syscall-trace.info --gcov-tool $(which gcov-12)
           lcov --remove coverage-syscall-trace.info '/usr/*' --output-file coverage-syscall-trace.info
           lcov --list coverage-syscall-trace.info
       - name: Upload uprobe coverage
diff --git a/.github/workflows/test-runtime.yml b/.github/workflows/test-runtime.yml
index f6fab15a..309f1623 100644
--- a/.github/workflows/test-runtime.yml
+++ b/.github/workflows/test-runtime.yml
@@ -39,23 +39,37 @@ jobs:
         cmake --build build --config Debug --target bpftime_runtime_tests -j$(nproc)
     - name: Test Runtime
       run:  ./build/runtime/unit-test/bpftime_runtime_tests
-    - name: upload runtime coverage
+    - name: Generate runtime coverage
       run: |
-        lcov --capture --directory . --output-file coverage.info
-        lcov --remove coverage.info '/usr/*' --output-file coverage.info
-        lcov --list coverage.info
+        lcov --capture --directory . --output-file coverage-runtime.info --gcov-tool $(which gcov-12)
+        lcov --remove coverage-runtime.info '/usr/*' --output-file coverage-runtime.info
+        lcov --list coverage-runtime.info
+      - name: Upload runtime coverage
+        uses: actions/upload-artifact@v4
+        with:
+          name: coverage-runtime
+          include-hidden-files: false
+          path: |
+            ./coverage-runtime.info
 
+    
     - name: build runtime with mpk enable
       run: |
         rm -rf build
         cmake -Bbuild -DTEST_LCOV=ON -DBPFTIME_LLVM_JIT=YES  -DBPFTIME_ENABLE_UNIT_TESTING=YES -DBPFTIME_ENABLE_MPK=YES -DCMAKE_BUILD_TYPE=Debug
         cmake --build build --config Debug --target bpftime_runtime_tests -j$(nproc)
-    - name: upload runtime with mpk enable coverage
-      run: |
-        lcov --capture --directory . --output-file coverage.info
-        lcov --remove coverage.info '/usr/*' --output-file coverage.info
-        lcov --list coverage.info
-
-
     - name: test runtime with mpk
       run:  ./build/runtime/unit-test/bpftime_runtime_tests
+    - name: Generate runtime with mpk enable coverage
+      run: |
+        lcov --capture --directory . --output-file coverage-runtime-mpk.info --gcov-tool $(which gcov-12)
+        lcov --remove coverage-runtime-mpk.info '/usr/*' --output-file coverage-runtime-mpk.info
+        lcov --list coverage-runtime-mpk.info
+    - name: Upload runtime-mpk coverage
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage-runtime-mpk
+        include-hidden-files: false
+        path: |
+          ./coverage-runtime-mpk.info
+