diff --git a/.github/workflows/unit-test.yml b/.github/workflows/unit-test.yml
index 6214765b..06f2ba69 100644
--- a/.github/workflows/unit-test.yml
+++ b/.github/workflows/unit-test.yml
@@ -19,7 +19,7 @@ jobs:
     - name: Install dependencies
       run: |
         sudo apt-get update
-        sudo apt-get install -y libboost-all-dev libfmt-dev lcov gcc-11 g++-11
+        sudo apt-get install -y libboost-all-dev libfmt-dev lcov
 
     - name: Run unit test
       run: |
diff --git a/extras/test/unit/coverage.sh b/extras/test/unit/coverage.sh
index d9acb63a..f3606c67 100755
--- a/extras/test/unit/coverage.sh
+++ b/extras/test/unit/coverage.sh
@@ -3,7 +3,7 @@
 set -e
 filename="lcov"
 rm -rf $filename.*
-lcov --capture --directory build --output-file "${filename}.info" --gcov-tool gcov-11
+lcov --capture --directory build --output-file "${filename}.info"
 
 # filter out boost and C++ standard library
 lcov --remove "${filename}.info" "/usr/*/boost/*" "/usr/include/c++/*" --output-file "${filename}.info"