diff --git a/Cargo.toml b/Cargo.toml
index c3f3920..9557d1d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,7 +18,7 @@ crate-type = [
 
 [dependencies]
 
-ark-circom = { git = "https://github.com/codex-storage/circom-compat.git#71f1ceb11aef27256", features = ["circom-2", "ethereum"]}
+ark-circom = { git = "https://github.com/codex-storage/circom-compat.git", rev = "71f1ceb11aef27256", features = ["circom-2", "ethereum"]}
 
 ark-crypto-primitives = { version = "=0.4.0" }
 ark-ec = { version = "=0.4.1", default-features = false, features = ["parallel"] }
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
new file mode 100644
index 0000000..969710a
--- /dev/null
+++ b/rust-toolchain.toml
@@ -0,0 +1,2 @@
+[toolchain]
+channel = "1.67.0"