diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index 3d30464c..acb77cff 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -1,6 +1,7 @@
 set(BUILD_SHARED_LIBS OFF)
 
 set(FMT_INSTALL OFF)
+set(FMT_MODULE ON)
 add_subdirectory(fmt)
 
 add_subdirectory(json)
diff --git a/gpt4all-backend/CMakeLists.txt b/gpt4all-backend/CMakeLists.txt
index 0f9e9b16..afcd62bc 100644
--- a/gpt4all-backend/CMakeLists.txt
+++ b/gpt4all-backend/CMakeLists.txt
@@ -1,6 +1,7 @@
 cmake_minimum_required(VERSION 3.29)
 project(gpt4all-backend VERSION 0.1 LANGUAGES CXX)
 
+set(CMAKE_CXX_STANDARD 23)  # make sure fmt module is compiled with the same C++ version as us
 include(../common/common.cmake)
 
 find_package(Qt6 6.8 COMPONENTS Core REQUIRED)
diff --git a/gpt4all-backend/deps/CMakeLists.txt b/gpt4all-backend/deps/CMakeLists.txt
index ca433bc3..7828a22b 100644
--- a/gpt4all-backend/deps/CMakeLists.txt
+++ b/gpt4all-backend/deps/CMakeLists.txt
@@ -1,5 +1,5 @@
 add_library(ollama-hpp INTERFACE)
-target_include_directories(ollama-hpp INTERFACE
+target_include_directories(ollama-hpp SYSTEM INTERFACE
     "${CMAKE_CURRENT_SOURCE_DIR}/ollama-hpp/include"
 )
 target_link_libraries(ollama-hpp INTERFACE
diff --git a/gpt4all-backend/src/main.cpp b/gpt4all-backend/src/main.cpp
index 8f44d857..386cdda6 100644
--- a/gpt4all-backend/src/main.cpp
+++ b/gpt4all-backend/src/main.cpp
@@ -8,8 +8,11 @@ module;
 
 module gpt4all.backend.main;
 
+import fmt;
+
 
 std::string LLMProvider::qstringToSTL(const QString &s)
 {
+    fmt::format("{}", "foo");
     return s.toStdString();
 }