diff --git a/CMakeLists.txt b/CMakeLists.txt
index 465d57a..4815d51 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.12)
+cmake_minimum_required(VERSION 3.18)
 
 set(VERSION_MAJOR 0)
 set(VERSION_MINOR 3)
@@ -9,11 +9,12 @@ project(telemetry VERSION ${VERSION})
 
 include(cmake/build_type.cmake)
 include(cmake/installation.cmake)
+include(cmake/dependencies.cmake)
 
-option(TELEMETRY_BUILD_SHARED "Build shared library" ON)
-option(TELEMETRY_PACKAGE_BUILDER "Enable RPM package builder (make rpm)" ON)
-option(TELEMETRY_INSTALL_TARGETS "Generate the install target" ON)
-option(TELEMETRY_ENABLE_TESTS "Build Unit tests (make test)" OFF)
+option(TELEMETRY_BUILD_SHARED       "Build shared library" ON)
+option(TELEMETRY_PACKAGE_BUILDER    "Enable RPM package builder (make rpm)" ON)
+option(TELEMETRY_INSTALL_TARGETS    "Generate the install target" ON)
+option(TELEMETRY_ENABLE_TESTS       "Build Unit tests (make test)" OFF)
 option(TELEMETRY_ENABLE_DOC_DOXYGEN "Enable build of code documentation" OFF)
 
 set(CMAKE_CXX_STANDARD 17)
@@ -21,19 +22,10 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS ON)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wall -Wextra")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic -Wall -Wextra -Wunused -Wconversion -Wsign-conversion")
 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -Werror")
 set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -g -ggdb3")
 
-# This option ensures that standard include header paths are explicitly added
-# to the generated compile_commands.json file.
-# clang-tidy doesn't seem to find standard include headers otherwise.
-if (CMAKE_EXPORT_COMPILE_COMMANDS)
-	set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
-endif()
-
-include(cmake/dependencies.cmake)
-
 if (TELEMETRY_ENABLE_TESTS)
 	include(cmake/googletest.cmake)
 	include(GoogleTest)
diff --git a/cmake/googletest.cmake b/cmake/googletest.cmake
index 0f2aa4f..b9ca222 100644
--- a/cmake/googletest.cmake
+++ b/cmake/googletest.cmake
@@ -12,4 +12,10 @@ FetchContent_Declare(
 	GIT_REPOSITORY https://github.com/google/googletest.git
 	GIT_TAG        v1.14.0
 )
+
+# Library does not compile with -Wsign-conversion that we use in builds
+string(REPLACE "-Wsign-conversion " " " CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ")
+string(REPLACE "-Wsign-conversion " " " CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ")
+string(REPLACE "-Wsign-conversion " " " CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ")
+
 FetchContent_MakeAvailable(googletest)
diff --git a/src/appFs/appFs.cpp b/src/appFs/appFs.cpp
index ecc1927..740cc9c 100644
--- a/src/appFs/appFs.cpp
+++ b/src/appFs/appFs.cpp
@@ -32,7 +32,8 @@ static off_t getMaxFileSize(const std::shared_ptr<File>& file)
 	}
 
 	constexpr double requiredBlockEmptyCapacityMultiplier = 0.5;
-	constexpr size_t requiredCapacity = blockSize * requiredBlockEmptyCapacityMultiplier;
+	constexpr auto requiredCapacity = static_cast<size_t>(
+		static_cast<double>(blockSize) * requiredBlockEmptyCapacityMultiplier);
 
 	const size_t contentSize = fileContentToString(file).size();
 	const size_t blockSizeMultiplier = (contentSize + requiredCapacity) / blockSize + 1;
@@ -217,12 +218,14 @@ static int readFile(
 		cacheBuffer = fileContentToString(file);
 	}
 
-	if (static_cast<size_t>(offset) >= cacheBuffer.size()) {
+	const auto uOffset = static_cast<size_t>(offset);
+
+	if (uOffset >= cacheBuffer.size()) {
 		return 0;
 	}
 
-	const size_t length = std::min(size, cacheBuffer.size() - offset);
-	std::memcpy(buffer, cacheBuffer.c_str() + offset, length);
+	const size_t length = std::min(size, cacheBuffer.size() - uOffset);
+	std::memcpy(buffer, cacheBuffer.c_str() + uOffset, length);
 
 	return static_cast<int>(length);
 }