diff --git a/operator/merkle_tree/lib/rust-toolchain b/operator/merkle_tree/lib/rust-toolchain
index 22d6c6fd9b..526951c2a6 100644
--- a/operator/merkle_tree/lib/rust-toolchain
+++ b/operator/merkle_tree/lib/rust-toolchain
@@ -1,3 +1,3 @@
 [toolchain]
-channel = "nightly-2024-04-17"
+channel = "stable"
 components = ["llvm-tools", "rustc-dev", "rustfmt", "rust-src"]
diff --git a/operator/risc_zero/lib/rust-toolchain b/operator/risc_zero/lib/rust-toolchain
index 45c8874831..526951c2a6 100644
--- a/operator/risc_zero/lib/rust-toolchain
+++ b/operator/risc_zero/lib/rust-toolchain
@@ -1,2 +1,3 @@
 [toolchain]
+channel = "stable"
 components = ["llvm-tools", "rustc-dev", "rustfmt", "rust-src"]