diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9bf6dec..7a3535c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,7 @@ set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+set(CMAKE_COMPILE_WARNING_AS_ERROR ON)
 
 find_package(argparse QUIET)
 find_package(magic_enum QUIET)
diff --git a/lib/ftdi/spi_host.cc b/lib/ftdi/spi_host.cc
index d65f6eb..ab6fc24 100644
--- a/lib/ftdi/spi_host.cc
+++ b/lib/ftdi/spi_host.cc
@@ -222,6 +222,7 @@ bool SpiHost::set_clock(size_t clock) {
     std::cerr << std::format("failed to update the clock:{}\n", status);
     return false;
   }
+  return true;
 }
 
 static std::optional<SpiHost> new_ft4222(DeviceInfo& device) {
diff --git a/nix/ftditool.nix b/nix/ftditool.nix
index 704344b..bd1bef1 100644
--- a/nix/ftditool.nix
+++ b/nix/ftditool.nix
@@ -19,7 +19,7 @@
 }:
 stdenv.mkDerivation {
   pname = "ftditool";
-  version = "0.1.0";
+  version = "0.4.0";
   src = ../.;
 
   nativeBuildInputs = [