diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6404c42..acdb482 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
     - name: Install dependencies for Ubuntu
       run: |
           sudo apt-get update
-          sudo apt-get install --yes help2man qtbase5-dev qttools5-dev qttools5-dev-tools libchewing3-dev lcov
+          sudo apt-get install --yes help2man qtbase5-dev qttools5-dev qttools5-dev-tools libchewing3-dev lcov libgtest-dev
           gcc --version
           g++ --version
           gcov --version
@@ -37,7 +37,7 @@ jobs:
       run: |
           # dependencies
           brew update
-          brew install libchewing qt@5
+          brew install libchewing qt@5 googletest
 
           # Allow CMake to find qt@5 by passing down the environment variable
           echo "CMAKE_PREFIX_PATH=$(brew --prefix qt@5)" >> $GITHUB_ENV
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ddc5b6f..f345315 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,7 +22,7 @@ set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX	${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_fla
 cmake_minimum_required(VERSION 3.10.0...3.31.6)
 project(chewing-editor VERSION 0.1.2 LANGUAGES CXX)
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 
 include(GNUInstallDirs)
 
@@ -65,7 +65,7 @@ else()
     pkg_check_modules(CHEWING REQUIRED chewing>=0.4.0)
 endif()
 
-pkg_check_modules(GTEST REQUIRED gtest>=1.7.0)
+pkg_check_modules(GTEST REQUIRED gtest>=1.7.0 IMPORTED_TARGET)
 
 # Qt library
 set(CMAKE_AUTOMOC ON)
@@ -266,7 +266,7 @@ add_executable(run-test
     ${run-test_src}
 )
 target_link_libraries(run-test
-    gtest
+    PkgConfig::GTEST
 
     exporter
     importer
diff --git a/scripts/lcov.sh b/scripts/lcov.sh
index a5aa117..b8a5b32 100755
--- a/scripts/lcov.sh
+++ b/scripts/lcov.sh
@@ -38,7 +38,7 @@ done
 #echo "ok"
 
 ABSPATH=$(cd "$(dirname "$0")/.."; pwd)
-lcov --directory $PWD --capture --output-file coverage.info --no-checksum --compat-libtool
-lcov --remove coverage.info "/usr/include/*" "$ABSPATH/gmock/*" "$ABSPATH/test/*" --output-file coverage.info
+lcov --ignore-errors empty,mismatch --directory $PWD --capture --output-file coverage.info --no-checksum --compat-libtool
+lcov --ignore-errors empty,mismatch --remove coverage.info "/usr/include/*" "$ABSPATH/gmock/*" "$ABSPATH/test/*" --output-file coverage.info
 LANG=C genhtml --prefix $ABSPATH --output-directory coveragereport \
-    --title "Code Coverage" --legend --show-details coverage.info
+    --title "Code Coverage" --legend --ignore-errors empty,mismatch --show-details coverage.info