diff --git a/.gitmodules b/.gitmodules
index ecc2720..3d0aed5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,3 +7,6 @@
 [submodule "vendor/toddcox"]
 	path = vendor/toddcox
 	url = https://github.com/JCRaymond/toddcox-faster.git
+[submodule "vendor/yaml-cpp"]
+	path = vendor/yaml-cpp
+	url = git://github.com/jbeder/yaml-cpp.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 505fccf..3648714 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,8 @@ project(toddcox-faster)
 set(CMAKE_CXX_STANDARD 17)
 
 add_subdirectory(vendor/toddcox)
+
+add_subdirectory(vendor/yaml-cpp)
 add_subdirectory(vendor/glad)
 add_subdirectory(vendor/glfw)
 add_subdirectory(vendor/glm)
diff --git a/vendor/yaml-cpp b/vendor/yaml-cpp
new file mode 160000
index 0000000..4edff1f
--- /dev/null
+++ b/vendor/yaml-cpp
@@ -0,0 +1 @@
+Subproject commit 4edff1fa5dbfca16fc72d89870841bee89f8ef89
diff --git a/vis/CMakeLists.txt b/vis/CMakeLists.txt
index cb493cd..e8e488d 100644
--- a/vis/CMakeLists.txt
+++ b/vis/CMakeLists.txt
@@ -12,8 +12,6 @@ add_custom_command(
         COMMENT "copied preses"
 )
 
-find_package(yaml-cpp REQUIRED)
-
 add_library(vis-util INTERFACE)
 target_include_directories(vis-util INTERFACE include)
 
diff --git a/vis/src/main.cpp b/vis/src/main.cpp
index 64ea975..922d7ea 100644
--- a/vis/src/main.cpp
+++ b/vis/src/main.cpp
@@ -343,6 +343,10 @@ int main(int argc, char *argv[]) {
         return EXIT_FAILURE;
     }
 
+    glfwWindowHint(GLFW_VERSION_MAJOR, 4);
+    glfwWindowHint(GLFW_VERSION_MAJOR, 5);
+//    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
     auto window = glfwCreateWindow(
         1920, 1080,
         "Coset Visualization",
@@ -360,6 +364,8 @@ int main(int argc, char *argv[]) {
     glClear(GL_COLOR_BUFFER_BIT);
     glfwSwapBuffers(window);
 
+    std::cout << utilInfo();
+
     std::string config_file = "presets/default.yaml";
     if (argc > 1) config_file = std::string(argv[1]);