diff --git a/.cache/clangd/index/main.cpp.3D7987728F8D29F9.idx b/.cache/clangd/index/main.cpp.3D7987728F8D29F9.idx
new file mode 100644
index 0000000..7f1c85e
Binary files /dev/null and b/.cache/clangd/index/main.cpp.3D7987728F8D29F9.idx differ
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..0fa1b83
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,8 @@
+---
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v2.3.0
+    hooks:
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: trailing-whitespace
diff --git a/README.md b/README.md
index e224d41..8ff5255 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,10 @@
 # daw-project
 
-
 ## Build
 
+### Requirenments
+
+#### Linux
+
+- qt6
+- jack
diff --git a/src/main.cpp b/src/main.cpp
index 05a834e..84ed2d6 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,7 +3,7 @@
 #include <cmath>
 #include <iostream>
 #include <atomic>
-
+#include "QApplication"
 static std::atomic<jack_client_t*> g_client{nullptr};
 static float g_phase = 0.0f;
 static const float kFreq = 440.0f;