diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index 171061198..deb51f538 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -11,7 +11,7 @@ on:
         default: "nightly"
 
 env:
-  WIN_RUST_VERSION: "1.75" # https://github.com/rustdesk/rustdesk/discussions/7503
+  WIN_RUST_VERSION: "1.75" # https://github.com/rustdesk/rustdesk/discussions/7503, also 1.78 has ABI change which causes our sciter version not working, https://blog.rust-lang.org/2024/03/30/i128-layout-update.html
   RUST_VERSION: "1.75" # sciter failed on m1 with 1.78 because of https://blog.rust-lang.org/2024/03/30/i128-layout-update.html
   CARGO_NDK_VERSION: "3.1.2"
   LLVM_VERSION: "15.0.6"