diff --git a/README.md b/README.md
index 1711c37..0a90712 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ Using the TV algorithm to denoise images with c++ and cuda.
     g++
     vcpkg
     cmake
+    gtk
     opencv2
     cuda
 ## Build