diff --git a/.github/workflows/flutter-build.yml b/.github/workflows/flutter-build.yml
index 1c222b8ba..171061198 100644
--- a/.github/workflows/flutter-build.yml
+++ b/.github/workflows/flutter-build.yml
@@ -12,7 +12,7 @@ on:
 
 env:
   WIN_RUST_VERSION: "1.75" # https://github.com/rustdesk/rustdesk/discussions/7503
-  RUST_VERSION: "1.78"
+  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"
   FLUTTER_VERSION: "3.19.6"