diff --git a/zk_toolbox/rust-toolchain b/zk_toolbox/rust-toolchain
index fb426719abc7..54227249d1ff 100644
--- a/zk_toolbox/rust-toolchain
+++ b/zk_toolbox/rust-toolchain
@@ -1 +1 @@
-stable-1.78.0
+1.78.0